C6220 Wifi suddenly became bad overnight and has been bad for a month

[hdvevs]

I noticed that my wifi wasn't as good as it usually was on 10/13 and thats exactly when these errors started popping up. I've reset my router multiple times and it is still not good.

[plemans]

What speeds do you get hardwired? 
do you have a screen snip of the cable connections page? 

If you have any splitters, amplifiers, or attenuators, I'd recommed removing them.