Hi, i'm dealing with an issue regarding my tp link router. I have a setup which includes 2 routers, main is getting fiber internet and i have connected the main to a second tp link router via lan-lan connection from which i have internet to my computer.

The main issue is that i cannot get cat5 speed for upload. I tried to recable the 2 and switch the ports but sometimes i get 100mbps download and below 1mbps upload and other times 10mbps download and 10mbps upload. It's a recent issue caused by some power cuts i have had. I checked the speeds on the main router and they are fine, however i can't plug the fiber into the tp link as it doesnt have any port for that.

For now i'm left with no ideas and i'm looking forward for any suggestion. Thank you.