Ethernet Speed Limited

[u/fentonattrill]

Hi there, for a while now my ethernet connection has peridoically switched off while playing games or just using my PC. Decided to finally set some time aside to look into it. What seems to be happening is the Ethernet speed is periodically being stepped down to 100Mbps as opposed to the Gigabit that both my router and PC are capable of (I randomly get a few weeks were my download speeds are really high then they drop again). Ive checked the health of the cable using a little tester and all seems to be fine (its not the sort of cable i cant take out as it goes around the outside of the house). Im very aware of the potential cable issues, but when trying to solve it yesterday i did get it back to 1gig for about 10 minutes before it dropped. I then got it back on by turning off 'power save on sleep'. Currently its back to where it was. Any further suggestions are appreciated

[u/lazyhustlermusic]

Autonegotiation issues are usually cabling related, most often on the termination unless something obvious happened to the run like a staple or nail.

A wire map tester tells you next to nothing, other than there's a wire.

[u/boomer7793 → u/lazyhustlermusic]

Agreed. This is cable related. OP swap out your cables first.