Significant variation exists in download rates among users.
Significant variation exists in download rates among users.
Hi everyone, I've observed unusual download performance on one of my Windows PCs. Depending on the source, speeds range from about 10-12 MB/s to around 1 MB/s. I have a 100 Mbps fiber connection, which should normally support faster downloads. The issue is that other clients are consistently achieving much higher speeds regardless of the server. I checked the network connection and even tried using the LAN cable from a stable client. To rule out hardware problems, I reinstalled Chrome OS Flex on the affected machine. The speeds there are normal. This suggests a software-related problem. Did I overlook something? Any suggestions on what might be causing this? I'm looking for help.
Ensure the PC experiencing sluggish performance isn’t locked into a fixed 100 Mbps Fast Ethernet. Allow automatic speed negotiation. Verify if newer network adapter drivers are available for this machine.
I verified the link and it shows auto mode, giving a gigabit link. Both my 2.5gbit network switch confirms this. The NIC drivers are from 2017 but they claim to be current per the Asus site (the board is actually quite old). If the connection were slower, that wouldn’t explain why downloads still work smoothly. It’s really strange.
I performed a speed test to a server outside my location for comparison. The results from one of my high-speed clients were:
I resolved the issue by adjusting the netsh global tcp parameters. The autotuning level was changed to disabled, so I restored it to normal using the command: netsh int tcp set global autotuninglevel= normal. Additionally, I noticed that the RSS setting differs across devices—while my initially "slow pc" had it disabled, others have it enabled. What should be preferred?