Are you experiencing slow download speeds on one of two computers using identical hardware and drivers?
Are you experiencing slow download speeds on one of two computers using identical hardware and drivers?
I constructed x2 PCs a couple years ago using identical hardware. Both are running fully updated versions of Windows 11 with the same drivers. Still, one PC downloads slower by 3/4 speed. I considered the firewall might be the issue and turned it off completely, but nothing changed. I’m not sure what to believe now.
Both devices use identical wire types and lengths for connection. The cables might also carry AC power alongside data transmission.
Speed indicates whether it's 1.0Gbps or 100Mbps according to Ethernet status. Occasionally, network cables might lack properly crimped ends at either end. This has happened before; fortunately, I had a crimping tool and re-crimped the RJ45 plug, ensuring proper contact. It turns out that only one of the eight wires in a network cable needs to make contact to function correctly—only then will it default to megabit speed. Gigabit requires all eight wires to connect properly. Consider using a different network cable if this occurs.
Both computers are employing identical cables (cat6, 10ft) and simply move across the desk to the router. The Ethernet speed on each is "1.0Gbps". An internet test on all PCs shows 450 down and 35 up, while the PC experiencing issues reports 45 down and 35 up. I may switch to a different cable soon, but any alternative suggestions would be appreciated.
Tried a different cable and there were no improvements.
Checked all the options from a Microsoft thread but still no results.
Activated WWAN and WLAN services, which are crucial for proper wireless and wired connections.
- Navigate to Services (Press Windows key + R, type services.msc, click OK)
- Search for WLAN Autoconfig and WWAN Autoconfig, right-click and choose Properties, set to automatic if needed
- Restart the PC and verify the changes
If the problem continues, execute these commands in Command Prompt (Admin):
These commands will reset your internet connection and recalibrate settings.
Press Windows key + X, select Command prompt (Admin), then enter:
netsh int tcp set heuristics disabled
netsh int tcp set global autotuninglevel=disabled
netsh int tcp set global rss=enabled
netsh winsock reset
netsh int ip reset
ipconfig /release
ipconfig /renew
ipconfig /flushdns
I read more about the issue and saw others recommending using "netsh int tcp set global autotuninglevel=normal" instead of "disabled." This immediately resolved the problem! It seems the setting might have been accidentally changed to disabled somewhere in the past.