Question Network Speed

[thor401]

Hello all,

My computer's internet speed is slow, and I don't think it's my ISP.

I have two other computers (hard wired), and their speed test reads ~300 Mbps.
On the other hand, mine reads 10-18 Mbps (hard wired).

QoS is not enabled on my router.
I ran a speed test for my ISP, which reads ~300 Mbps (what I'm paying for and what the other computers are getting).
My data cable is Cat 5e, and was replaced (with another Cat5e).
NIC drivers are up to date.
Router is up to date. I've also tried different ports on my router (same speed results).

Specifications:
OS: Windows 10 Pro
OS Version: 10.0.19045 Build 19045
Mobo: Z370 Killer SLI/ac
NIC: Intel(R) Ethernet Connection (2) i219-V (using the NIC on my mobo. Why does it say (2)?)
NIC Driver Date/Version: 9/29/2020, 12.19.0.16

I'm running out of troubleshooting options, and this issue (if an issue) is new to me.

Thank you.

 

[thor401]

Hello all,

My computer's internet speed is slow, and I don't think it's my ISP.

I have two other computers (hard wired), and their speed test reads ~300 Mbps.
On the other hand, mine reads 10-18 Mbps (hard wired).

QoS is not enabled on my router.
I ran a speed test for my ISP, which reads ~300 Mbps (what I'm paying for and what the other computers are getting).
My data cable is Cat 5e, and was replaced (with another Cat5e).
NIC drivers are up to date.
Router is up to date. I've also tried different ports on my router (same speed results).

Specifications:
OS: Windows 10 Pro
OS Version: 10.0.19045 Build 19045
Mobo: Z370 Killer SLI/ac
NIC: Intel(R) Ethernet Connection (2) i219-V (using the NIC on my mobo. Why does it say (2)?)
NIC Driver Date/Version: 9/29/2020, 12.19.0.16

I'm running out of troubleshooting options, and this issue (if an issue) is new to me.

Thank you.

Resolved:

CMD (run as administrator)

netsh int tcp set global autotuninglevel=normal

Speed is nominal.

 

[pranabbhandari]

Try Clearing Cache & Background Processes

 

[johnbl]

ASRock > Z370 Killer SLI/ac
has a updated version of the driver.
Intel Lan driver ver:12.19.1.37b_v2
the 2 might be the version 2 of the chip on the motherboard.

if i remember correctly there was a bug in the chip where you had to disable some function. checksum offload.
My last machine had this chip on the motherboard. will try to look up the setting

intel download for the driver:
(select windows not windows 8.1)
Intel® Ethernet Adapter Complete Driver Pack
date is 2/17/2023

you should be able to disable the tcp/ip checksum offload option for ipv4 and ipv6 via the netadapter advanced properties.

you could also run this line in powershell
Disable-NetAdapterChecksumOffload -Name "*" -TcpIPv6

I would try the updated driver version first before making the setting change. often the driver update fixes problems by turning off the broken function.