So turns out it’s a driver issue. I booted up in safe mode and my speeds are up to normal. Now just need to go through the super fun task of figuring out which one is the issue... UPDATE: Not a...

@Tony Connection speed is set to 1 Gbps and changing the DNS didn't help.

Thanks for the suggestions. Tried them all with no success. I tested on another Windows 10 PC and it has normal speeds. Also tried disabling Windows Defender, but it didn’t help.

I'm having a weird issue with my Archer C4000 and Windows 10 PC. Here are my down/up speeds in mbps with certain setups: Modem —> Ethernet —> PC : 1000/35 Modem —> Ethernet —> Router : 1000/35 Modem...

@Carl Thanks for the help, but I just tried both and there is no change on any device. Is there anything else I can try, or do I just need to purchase a new router?

@Carl I don't appear to have the System Parameters menu. Would that setting be at a different loaction?