@kooldavid I do that too (rebooting @ 3AM automatically) but does not seem to help. Tried all suggestions here and on the web but nothing seems to work. Will replace this router w/ my old nighthawk...

I have the same problem but rebooting does not seem to effect the issue. Tried to report the problem but TP Link support page does not recognize the Archer C4000 as a valid model number in their...