bbc iplayer keeps stoping. It works ok on my ipad 3. Sky go is the same. I can work sky go ok on my android phone so its not the wifi conection. My laptop has core i5, 6 gb merrory, and a dedicated graphics card.
have your tried a different browser, like chrome or firefox? that might be worth a try. If not try re-installing your graphics drivers. Failing that you maybe running low on memory so try closing other programs. failing that... it could be a wireless signal or channel problem. test with an ethernet connected.