said by kenjai7373:could it be the router problem? in the beginning it always sync above 4500, maximum at 5100. now its max is 4607 during the hours u mention, then drops to 4000 right now.
No, unless you're using a combo modem/router and you're doing something *very* unusual with it. This is something else causing strain on the line, which is why I'm asking about anything else turning on or changing at 7am that stops at 7pm in your area.