Seems like an issue with Killer wifi card in your Machine.  Open Killer control center and disable all the optimizations.      Turn all these off   [IMAGE]  
I have a problem with my Dell XPS 13 9380. The internet generally seems fine but some reason random websites won't load. For example google works fine, bbc.co.uk loads up super fast as do many other websites. But there are some websites that refuse to load. A few examples of these are gamespot.com, plex.tv, live.com, outlook.com. This is very very frustrating. They all give the "This site can't be reached" error with "ERR_CONNECTION_RESET" below it.   I tried other devices (PC, laptop and phone) on the same Wifi and they all work fine. When I plug my Dell into the dock with a wired ethernet connection those sites seem to load. This seems to be a specific error with Dell Wifi.   I've updated to all the latest drivers.   Can anyone suggest anything. This is very disappointing from Dell [IMAGE]  
Some websites won't load on WiFi for no reason