I was able to find a post on my cell phone indicating it was nationwide DNS issue. A temp fix was to change DNS address in router to Googles 220.127.116.11 or 18.104.22.168. which worked well. My question is long term what do you recommend? Charter upgraded to Spectrum. Speeds increased to 100 Mbps up from 50. Like clockwork on weekends it tends to slow down to crawl. Up to this point a reboot of modem and router brought back proper speed. Today was different. No connection despite repeated reboots. I am wondering if I should permantely set DNS to something that is more stable. Should I change DNS address, keep what I have, or set it back to automatically get from ISP? The last one does not seem the best choice. What say you?