Question Top-end PC stuttering and having DPC Routine issues

[ShoneRL]

Hello,

I bought a PC a few months ago, it always felt a bit laggy on Windows 11 with stutters, audio cuts mid-playback and gaming frame skips ocassionally.
I'm running a 7950X3D with a RTX 4090. I have the Xbox app installed so I think that's taking charge of CCD parking though I'm not sure if it's doing the job properly.

Some of things I tried, none of which helped:

1. Updated BIOS to newest version.
2. Updated GPU drivers.
3. Updated CPU chipset.
4. Tweaked Windows Power Plan settings (Ultra Performance) and even some registry for Processor Idle Demote/Promote threshold to 100%.
5. Enabled MSI for Audio Controllers (GPU was already enabled though, just put it High priority).
6. Updated Audio drivers per instruction.

I ran LatencyMon for 2 hours and this is the output:

_________________________________________________________________________________________________________
CONCLUSION
_________________________________________________________________________________________________________
Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One or more DPC routines that belong to a driver running in your system appear to be executing for too long. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates.
LatencyMon has been analyzing your system for  2:08:33  (h:mm:ss) on all processors.


_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name:                                        DESKTOP-4MGK9EB
OS version:                                           Windows 11, 10.0, version 2009, build: 22631 (x64)
Hardware:                                             MS-7E12, Micro-Star International Co., Ltd.
BIOS:                                                 1.F0
CPU:                                                  AuthenticAMD AMD Ryzen 9 7950X3D 16-Core Processor
Logical processors:                                   32
Processor groups:                                     1
Processor group size:                                 32
RAM:                                                  31849 MB total


_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed (WMI):                             4201 MHz
Reported CPU speed (registry):                        420 MHz

Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.


_________________________________________________________________________________________________________
MEASURED INTERRUPT TO USER PROCESS LATENCIES
_________________________________________________________________________________________________________
The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.

Highest measured interrupt to process latency (µs):   1327,20
Average measured interrupt to process latency (µs):   10,161505

Highest measured interrupt to DPC latency (µs):       1323,80
Average measured interrupt to DPC latency (µs):       3,633736


_________________________________________________________________________________________________________
 REPORTED ISRs
_________________________________________________________________________________________________________
Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.

Highest ISR routine execution time (µs):              298,520
Driver with highest ISR routine execution time:       Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Highest reported total ISR routine time (%):          0,000232
Driver with highest ISR total time:                   Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Total time spent in ISRs (%)                          0,000232

ISR count (execution time <250 µs):                   986651
ISR count (execution time 250-500 µs):                0
ISR count (execution time 500-1000 µs):               1
ISR count (execution time 1000-2000 µs):              0
ISR count (execution time 2000-4000 µs):              0
ISR count (execution time >=4000 µs):                 0


_________________________________________________________________________________________________________
REPORTED DPCs
_________________________________________________________________________________________________________
DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.

Highest DPC routine execution time (µs):              5890,130
Driver with highest DPC routine execution time:       ntoskrnl.exe - NT Kernel & System, Microsoft Corporation

Highest reported total DPC routine time (%):          0,033394
Driver with highest DPC total execution time:         nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 565.90 , NVIDIA Corporation

Total time spent in DPCs (%)                          0,088144

DPC count (execution time <250 µs):                   24144565
DPC count (execution time 250-500 µs):                0
DPC count (execution time 500-10000 µs):              493
DPC count (execution time 1000-2000 µs):              10
DPC count (execution time 2000-4000 µs):              0
DPC count (execution time >=4000 µs):                 6


_________________________________________________________________________________________________________
 REPORTED HARD PAGEFAULTS
_________________________________________________________________________________________________________
Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.

NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.

Process with highest pagefault count:                 chrome.exe

Total number of hard pagefaults                       46370
Hard pagefault count of hardest hit process:          3859
Number of processes hit:                              132


_________________________________________________________________________________________________________
 PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s):                       520,177338
CPU 0 ISR highest execution time (µs):                88,290
CPU 0 ISR total execution time (s):                   0,306869
CPU 0 ISR count:                                      555642
CPU 0 DPC highest execution time (µs):                5890,130
CPU 0 DPC total execution time (s):                   201,654590
CPU 0 DPC count:                                      20654890
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s):                       42,852680
CPU 1 ISR highest execution time (µs):                40,180
CPU 1 ISR total execution time (s):                   0,098902
CPU 1 ISR count:                                      203850
CPU 1 DPC highest execution time (µs):                328,270
CPU 1 DPC total execution time (s):                   2,428740
CPU 1 DPC count:                                      310856
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s):                       32,065281
CPU 2 ISR highest execution time (µs):                0,0
CPU 2 ISR total execution time (s):                   0,0
CPU 2 ISR count:                                      0
CPU 2 DPC highest execution time (µs):                289,650
CPU 2 DPC total execution time (s):                   2,946432
CPU 2 DPC count:                                      403462
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s):                       26,425922
CPU 3 ISR highest execution time (µs):                30,410
CPU 3 ISR total execution time (s):                   0,001235
CPU 3 ISR count:                                      1914
CPU 3 DPC highest execution time (µs):                306,40
CPU 3 DPC total execution time (s):                   0,895357
CPU 3 DPC count:                                      93009
_________________________________________________________________________________________________________
CPU 4 Interrupt cycle time (s):                       24,971154
CPU 4 ISR highest execution time (µs):                0,0
CPU 4 ISR total execution time (s):                   0,0
CPU 4 ISR count:                                      0
CPU 4 DPC highest execution time (µs):                358,150
CPU 4 DPC total execution time (s):                   1,079445
CPU 4 DPC count:                                      127433
_________________________________________________________________________________________________________
CPU 5 Interrupt cycle time (s):                       18,713278
CPU 5 ISR highest execution time (µs):                0,0
CPU 5 ISR total execution time (s):                   0,0
CPU 5 ISR count:                                      0
CPU 5 DPC highest execution time (µs):                63,80
CPU 5 DPC total execution time (s):                   0,025785
CPU 5 DPC count:                                      11359
_________________________________________________________________________________________________________
CPU 6 Interrupt cycle time (s):                       21,605592
CPU 6 ISR highest execution time (µs):                0,0
CPU 6 ISR total execution time (s):                   0,0
CPU 6 ISR count:                                      0
CPU 6 DPC highest execution time (µs):                193,360
CPU 6 DPC total execution time (s):                   0,684287
CPU 6 DPC count:                                      78638
_________________________________________________________________________________________________________
CPU 7 Interrupt cycle time (s):                       16,357528
CPU 7 ISR highest execution time (µs):                0,0
CPU 7 ISR total execution time (s):                   0,0
CPU 7 ISR count:                                      0
CPU 7 DPC highest execution time (µs):                98,310
CPU 7 DPC total execution time (s):                   0,008414
CPU 7 DPC count:                                      3565
_________________________________________________________________________________________________________
CPU 8 Interrupt cycle time (s):                       17,476716
CPU 8 ISR highest execution time (µs):                0,0
CPU 8 ISR total execution time (s):                   0,0
CPU 8 ISR count:                                      0
CPU 8 DPC highest execution time (µs):                49,650
CPU 8 DPC total execution time (s):                   0,027368
CPU 8 DPC count:                                      12454
_________________________________________________________________________________________________________
CPU 9 Interrupt cycle time (s):                       15,146541
CPU 9 ISR highest execution time (µs):                0,0
CPU 9 ISR total execution time (s):                   0,0
CPU 9 ISR count:                                      0
CPU 9 DPC highest execution time (µs):                61,730
CPU 9 DPC total execution time (s):                   0,012002
CPU 9 DPC count:                                      5502
_________________________________________________________________________________________________________
CPU 10 Interrupt cycle time (s):                       14,896704
CPU 10 ISR highest execution time (µs):                0,0
CPU 10 ISR total execution time (s):                   0,0
CPU 10 ISR count:                                      0
CPU 10 DPC highest execution time (µs):                64,880
CPU 10 DPC total execution time (s):                   0,005681
CPU 10 DPC count:                                      2648
_________________________________________________________________________________________________________
CPU 11 Interrupt cycle time (s):                       14,444002
CPU 11 ISR highest execution time (µs):                0,0
CPU 11 ISR total execution time (s):                   0,0
CPU 11 ISR count:                                      0
CPU 11 DPC highest execution time (µs):                94,70
CPU 11 DPC total execution time (s):                   0,007450
CPU 11 DPC count:                                      3007
_________________________________________________________________________________________________________
CPU 12 Interrupt cycle time (s):                       12,644427
CPU 12 ISR highest execution time (µs):                0,0
CPU 12 ISR total execution time (s):                   0,0
CPU 12 ISR count:                                      0
CPU 12 DPC highest execution time (µs):                52,090
CPU 12 DPC total execution time (s):                   0,004705
CPU 12 DPC count:                                      2100
_________________________________________________________________________________________________________
CPU 13 Interrupt cycle time (s):                       12,145950
CPU 13 ISR highest execution time (µs):                0,0
CPU 13 ISR total execution time (s):                   0,0
CPU 13 ISR count:                                      0
CPU 13 DPC highest execution time (µs):                71,550
CPU 13 DPC total execution time (s):                   0,003582
CPU 13 DPC count:                                      1875
_________________________________________________________________________________________________________
CPU 14 Interrupt cycle time (s):                       12,758940
CPU 14 ISR highest execution time (µs):                0,0
CPU 14 ISR total execution time (s):                   0,0
CPU 14 ISR count:                                      0
CPU 14 DPC highest execution time (µs):                64,410
CPU 14 DPC total execution time (s):                   0,004679
CPU 14 DPC count:                                      1914
_________________________________________________________________________________________________________
CPU 15 Interrupt cycle time (s):                       12,383710
CPU 15 ISR highest execution time (µs):                0,0
CPU 15 ISR total execution time (s):                   0,0
CPU 15 ISR count:                                      0
CPU 15 DPC highest execution time (µs):                81,260
CPU 15 DPC total execution time (s):                   0,004556
CPU 15 DPC count:                                      1599
_________________________________________________________________________________________________________
CPU 16 Interrupt cycle time (s):                       34,335058
CPU 16 ISR highest execution time (µs):                0,0
CPU 16 ISR total execution time (s):                   0,0
CPU 16 ISR count:                                      0
CPU 16 DPC highest execution time (µs):                125,90
CPU 16 DPC total execution time (s):                   0,206020
CPU 16 DPC count:                                      79631
_________________________________________________________________________________________________________
CPU 17 Interrupt cycle time (s):                       29,943783
CPU 17 ISR highest execution time (µs):                0,0
CPU 17 ISR total execution time (s):                   0,0
CPU 17 ISR count:                                      0
CPU 17 DPC highest execution time (µs):                130,080
CPU 17 DPC total execution time (s):                   0,138694
CPU 17 DPC count:                                      55049
_________________________________________________________________________________________________________
CPU 18 Interrupt cycle time (s):                       42,334451
CPU 18 ISR highest execution time (µs):                0,0
CPU 18 ISR total execution time (s):                   0,0
CPU 18 ISR count:                                      0
CPU 18 DPC highest execution time (µs):                118,120
CPU 18 DPC total execution time (s):                   0,572275
CPU 18 DPC count:                                      184048
_________________________________________________________________________________________________________
CPU 19 Interrupt cycle time (s):                       115,441414
CPU 19 ISR highest execution time (µs):                0,0
CPU 19 ISR total execution time (s):                   0,0
CPU 19 ISR count:                                      0
CPU 19 DPC highest execution time (µs):                471,970
CPU 19 DPC total execution time (s):                   3,332715
CPU 19 DPC count:                                      957318
_________________________________________________________________________________________________________
CPU 20 Interrupt cycle time (s):                       37,098810
CPU 20 ISR highest execution time (µs):                0,0
CPU 20 ISR total execution time (s):                   0,0
CPU 20 ISR count:                                      0
CPU 20 DPC highest execution time (µs):                142,640
CPU 20 DPC total execution time (s):                   0,295338
CPU 20 DPC count:                                      109237
_________________________________________________________________________________________________________
CPU 21 Interrupt cycle time (s):                       35,979458
CPU 21 ISR highest execution time (µs):                0,0
CPU 21 ISR total execution time (s):                   0,0
CPU 21 ISR count:                                      0
CPU 21 DPC highest execution time (µs):                299,490
CPU 21 DPC total execution time (s):                   0,239388
CPU 21 DPC count:                                      92202
_________________________________________________________________________________________________________
CPU 22 Interrupt cycle time (s):                       42,575891
CPU 22 ISR highest execution time (µs):                0,0
CPU 22 ISR total execution time (s):                   0,0
CPU 22 ISR count:                                      0
CPU 22 DPC highest execution time (µs):                468,240
CPU 22 DPC total execution time (s):                   0,431095
CPU 22 DPC count:                                      141471
_________________________________________________________________________________________________________
CPU 23 Interrupt cycle time (s):                       38,116618
CPU 23 ISR highest execution time (µs):                0,0
CPU 23 ISR total execution time (s):                   0,0
CPU 23 ISR count:                                      0
CPU 23 DPC highest execution time (µs):                5769,690
CPU 23 DPC total execution time (s):                   0,321965
CPU 23 DPC count:                                      113527
_________________________________________________________________________________________________________
CPU 24 Interrupt cycle time (s):                       35,713636
CPU 24 ISR highest execution time (µs):                0,0
CPU 24 ISR total execution time (s):                   0,0
CPU 24 ISR count:                                      0
CPU 24 DPC highest execution time (µs):                1104,870
CPU 24 DPC total execution time (s):                   0,234649
CPU 24 DPC count:                                      84139
_________________________________________________________________________________________________________
CPU 25 Interrupt cycle time (s):                       33,244599
CPU 25 ISR highest execution time (µs):                0,0
CPU 25 ISR total execution time (s):                   0,0
CPU 25 ISR count:                                      0
CPU 25 DPC highest execution time (µs):                126,620
CPU 25 DPC total execution time (s):                   0,187858
CPU 25 DPC count:                                      70051
_________________________________________________________________________________________________________
CPU 26 Interrupt cycle time (s):                       38,614048
CPU 26 ISR highest execution time (µs):                0,0
CPU 26 ISR total execution time (s):                   0,0
CPU 26 ISR count:                                      0
CPU 26 DPC highest execution time (µs):                275,480
CPU 26 DPC total execution time (s):                   0,500696
CPU 26 DPC count:                                      153633
_________________________________________________________________________________________________________
CPU 27 Interrupt cycle time (s):                       37,051298
CPU 27 ISR highest execution time (µs):                0,0
CPU 27 ISR total execution time (s):                   0,0
CPU 27 ISR count:                                      0
CPU 27 DPC highest execution time (µs):                473,930
CPU 27 DPC total execution time (s):                   0,342202
CPU 27 DPC count:                                      108371
_________________________________________________________________________________________________________
CPU 28 Interrupt cycle time (s):                       33,022847
CPU 28 ISR highest execution time (µs):                93,050
CPU 28 ISR total execution time (s):                   0,040665
CPU 28 ISR count:                                      65023
CPU 28 DPC highest execution time (µs):                589,210
CPU 28 DPC total execution time (s):                   0,338773
CPU 28 DPC count:                                      94674
_________________________________________________________________________________________________________
CPU 29 Interrupt cycle time (s):                       28,369283
CPU 29 ISR highest execution time (µs):                298,520
CPU 29 ISR total execution time (s):                   0,064563
CPU 29 ISR count:                                      79961
CPU 29 DPC highest execution time (µs):                168,220
CPU 29 DPC total execution time (s):                   0,108014
CPU 29 DPC count:                                      34991
_________________________________________________________________________________________________________
CPU 30 Interrupt cycle time (s):                       30,845916
CPU 30 ISR highest execution time (µs):                141,650
CPU 30 ISR total execution time (s):                   0,015915
CPU 30 ISR count:                                      17890
CPU 30 DPC highest execution time (µs):                152,720
CPU 30 DPC total execution time (s):                   0,145989
CPU 30 DPC count:                                      43051
_________________________________________________________________________________________________________
CPU 31 Interrupt cycle time (s):                       34,115911
CPU 31 ISR highest execution time (µs):                92,0
CPU 31 ISR total execution time (s):                   0,044892
CPU 31 ISR count:                                      62372
CPU 31 DPC highest execution time (µs):                142,970
CPU 31 DPC total execution time (s):                   0,376497
CPU 31 DPC count:                                      109370
_________________________________________________________________________________________________________

 

[KingLoki]

What games are causing an issue?
And ate you using a controller, or mouse/keyboard?

 

[ShoneRL]

What games are causing an issue?
And ate you using a controller, or mouse/keyboard?

Mouse & keyboard, not limited to a specific game or even activity.

I've had cuts in music streaming, stutter when watching movies & tv shows, stutter when playing games like Fn or any other game, it's pretty universal of an issue.

 

[KingLoki]

Is the stutter happening when offline too, or only through the Internet?

 

[johnbl]

go to the msi website, find your motherboard, find the
section to download drivers, find

MSI USB Audio FW Update Tool
and see if it helps.
(should be under the onboard audio drivers, second entry)

i would also update the led light control firmware.

after the updates, I would disable any audio hardware that does not have a speaker connected to it. then retest.
note: I assume you already updated Realtek HD Universal Driver that came out 10/15/24. if not pick up the update.

 

[ShoneRL]

I also updated the audio drivers, nothing has changed.

I just ran LatencyMon for a few minutes, then proceeded to start a game.
Instantly, LatencyMon went red, image attached.

It seems like the PC is just unable to smoothly start a game and multi-task, right now I'm running a VM and a browser and nothing else. The game I tried to run is Factorio.

For a 7950X3D and RTX 4090 system with 32 GB of DDR5 RAM, I don't think it should be an issue to launch a game and have it done so choppily.