Hi, 

My wifi has been having issues recently,  but after carrying skys broadband checker everything seems fine with their end. Only way I can get the issue to resolve is to unplug the TP link switch. I tried unplugging the outgoing cables from the switch 1 by 1 but even with no cables left (except for the link between sky router and tp link switch) the problem remained. I unplugged that link cable and everything is now fine. 

It's been ok for about a year leading up to thos so not sure what could cause this all of a sudden. Any ideas?