I have spectrum Connection with 200 Mbps speed, I used to have Modem provided by Spectrum and I never had any issues. I bougth A7 router and after few weeks I started noticing Internet speed going down randomly below 10 mbps. Now it is very pathetic as too frequently on daily basis internet speed is going down and I have to reboot the router. This will work for some time and I will get 200 mbps and then again it goes down. 

I have reached out to spectrum and they told everything good from their side. I even tried disabling WMM and NAT boost, also tried finding the log with any error, used Diagnostic and pinged www.google.com which loss 50% packet. so I guess some issue with router. I cheked with Near by also they dont seem having any issue with spectrum.

If some one can help me, really appreciate your help.