TP Link Archer C7 v2 - Fast wired connection only when disabling wireless

[Kaiju]

I've had this router for a few years and never had problems before but last night the wired connection dropped to a snails pace.

I turned off the wireless feature manually behind the router and the wired connection is normal again.

Any reason this could be happening?

I already did a factory reset but it's still occuring.

Windows 10.

 

[Kaiju]

Thanks, that did the trick.