Question Brand new PC has FPS stutter & lag only during mouse movements

Aug 11, 2019
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SPECS:
asrock z390 pro4
i9 9900k
gtx 2080
xpg spectrix d41 (8g x2)

PERIPH:
logitech gpro wireless & glorious odin (@1000hz)

I just got this pc and have been having issues, the issue goes across games. When I move my mouse
around my fps drops, even when standing still and doing tiny movements my fps still drops AND when I move my mouse in some games my FPS stays high but there is an EXTREMELY noticable choppyness/lag to the mouse movement. I've been researching dozens upon dozens of posts of these problems and haven't found a real fix. Things that I've tried already i'll list here:

  • setting game to low priority (...)
  • tried a different mouse
  • lowering mouse hz
  • DDU uninstall and reinstall GPU drivers
  • Windows tweaks like high battery performance & removing Game Bar/xbox dvr
  • Wiped drive and reinstalled windows 10 (ver 1903)
  • Looked for the malware stij.exe (not there)
** I've found that while my mouse is moving around my GPU usage drops from 80% to under 20% **
** here's video : https://streamable.com/tfuet

I've been extensively testing this issue and have found some things that trigger it more and less:

In Apex Legends, when the origin overlay is ON, the game runs smoothly at 200-300fps constant, but
once I move my mouse it will become EXTREMELY laggy & choppy dropping to double digit fps stuttering everywhere. If I open the origin overlay and move my mouse around the overlay, the game completely freezes as long as I keep moving my mouse around. With the overlay OFF, the extreme lag with mouse movement is gone, but there is still consistent fps drops & consistent micro stutters. Note that lowering my mouse hz in any game doesn't get rid of the issue, it only makes it less noticeable.

In Minecraft, the game runs at a very high fps 300-500. When I have the game FULLSCREENED, the fps
is high and game is smooth though, when I move my mouse the game begins to severely stutter though my fps DOES NOT drop. If I have my game in windowed or windowed fullscreen it is smooth, but when I fullscreen it, it gets choppy/stuttery. Also, there have been times when I've been fullscreened and it's been smooth. It's not consistent, but I've had a youtube video playing that has triggered it happening while ingame. I paused and unpaused the video multiple times while testing it and every time the video was playing the mouse movement was choppy/laggy.

In CSGO it's the least impacting, but it's still there and extremely noticable at times. When I move my mouse around while in game, fps always drops sometimes more than others, the most drastically going from ~350 fps to low 100 or even dropping into double digit. The feeling of stuttering alongside the fps spikes is still present. Even when I'm dead and spectating someone standing still, If I move my mouse around (while it's doing nothing in game, there isn't even a cursor) my fps will drop.

In all these cases as soon as I stop any mouse movement, the fps jumps back up / game becomes smooth again and I can walk around completely perfectly. ANY mouse movement immediately creates issues which is extremely irritating.

I'm not sure what's causing this, if it's a problem with the CPU pulling info/requests from my mouse and overloading? Which could explain why lowering mouse hz makes it less noticable. If anyone has any ideas on how to resolve this please let me know. Thank you for spending time reading this and any possible solutions to my issue is very very much appreciated. Thank you so much!
 
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When you tried a different mouse, was it also wireless? Have you ever tried the mouse you're using in wired mode if possible? Sometimes this kind of thing can come down to a poorly placed wireless receiver, or some other electronic device conflicting with it's signal transmission. Make sure your mouse driver is up to date, and I'd even check Device Manager to make sure no devices are flagged for missing drivers.

If you try the above and the wireless signal is not the problem, I'm going to go out on a limb and suggest you try a more commonly used brand of RAM. It's common practice among experienced game PC builders to always check the Memory QVL (Qualified Vendor List) to make sure the RAM you buy is certified as testing compatible with your MB.

I looked at the Mem QVL for the AsRock Z390 Pro4, and XPG is nowhere on the list. Things like Memory and PSUs are just as important as other components, you want to make sure you get reliable ones.

https://www.asrock.com/MB/Intel/Z390 Pro4/index.asp#Memory

Note, if you don't have access to a friend (or store you bought it at) that can let you momentarily try other RAM, at least test your XPG with a full Memtest86 scan if you haven't. Put it through all the default tests, which can take over 2 hours. There should be zero errors. https://www.memtest86.com/
 
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Aug 11, 2019
6
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10
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When you tried a different mouse, was it also wireless? Have you ever tried the mouse you're using in wired mode if possible? Sometimes this kind of thing can come down to a poorly placed wireless receiver, or some other electronic device conflicting with it's signal transmission. Make sure your mouse driver is up to date, and I'd even check Device Manager to make sure no devices are flagged for missing drivers.

If you try the above and the wireless signal is not the problem, I'm going to go out on a limb and suggest you try a more commonly used brand of RAM. It's common practice among experienced game PC builders to always check the Memory QVL (Qualified Vendor List) to make sure the RAM you buy is certified as testing compatible with your MB.

I looked at the Mem QVL for the AsRock Z390 Pro4, and XPG is nowhere on the list. Things like Memory and PSUs are just as important as other components, you want to make sure you get reliable ones.

https://www.asrock.com/MB/Intel/Z390 Pro4/index.asp#Memory

Note, if you don't have access to a friend (or store you bought it at) that can let you momentarily try other RAM, at least test your XPG with a full Memtest86 scan if you haven't. Put it through all the default tests, which can take over 2 hours. There should be zero errors. https://www.memtest86.com/
Hey, I ran the memory test on the ram and it came out with 0 errors, I just picked up a set of Corsair Vengeance LPX @3000mhz and installed it and it didn't help. While testing this out I realized that while teamspeak3 is open, and I move my mouse around in apex, my GPU usage drops from 80% to under 20%. When teamspeaks closed it stays up and the lag isn't as bad at all. In another game like minecraft though, teamspeak doesn't affect it but having a youtube video playing in chrome does. Idk what is going on
 
Yeah, well there are a lot of 3rd party softwares that don't work well with many games ,and teamspeak is one of them. Had you mentioned you were using such software while gaming I'd have told you to try running the game without it.

That said, it doesn't hurt to upgrade to a more well known, compatible RAM. I've been running Corsair Vengeance LPX on my rig for some time and it's rock solid. It's also pretty cheap lately, a lot cheaper than I got mine for.

I also don't get why you'd even want to run a YouTube video WHILE playing a game. Many will minimize a game of course if they're stuck in a spot to check a YouTube video, but playing a game WHILE watching a video is asking for too much.

Seems like what's going on is you need to know what a game can and can't handle. They aren't meant to be played while multitasking.
 
Aug 11, 2019
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Yeah, well there are a lot of 3rd party softwares that don't work well with many games ,and teamspeak is one of them. Had you mentioned you were using such software while gaming I'd have told you to try running the game without it.

That said, it doesn't hurt to upgrade to a more well known, compatible RAM. I've been running Corsair Vengeance LPX on my rig for some time and it's rock solid. It's also pretty cheap lately, a lot cheaper than I got mine for.

I also don't get why you'd even want to run a YouTube video WHILE playing a game. Many will minimize a game of course if they're stuck in a spot to check a YouTube video, but playing a game WHILE watching a video is asking for too much.

Seems like what's going on is you need to know what a game can and can't handle. They aren't meant to be played while multitasking.
Yeah of course running other things in the background will hinder the performance of any other programs running, but these problems are very slightly happening without other programs running, and teamspeak shouldnt be causing my game to drop hundreds of fps when I move my mouse. On my old 6 year old rig I was able to have TS open while playing apex and have a youtube video running on a second monitor while running minecraft just fine, so why shouldn't it be working now?

I wiped all drives/partitions and did a fresh install of windows and tested with the new ram in and still had no success so I'm almost convinced now that it's another part, either GPU/CPU or a bad PSU. If there's anything else you could suggest I try before returning/testing replacements for these parts please let me know. Either way thanks a ton helping out!
 

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