Problem with play with Windows 10

Ok , so ... I have install on my PC windows 10 , before i was with W7 on PC and the game was perfect . I log in to a game , but when it start i have lags and i cant play normal. I try everything ,but - unsuccessfully .. Restore to default setting - and again the same.. I haven't got MS and Ping on my screen and i cant restore it to show them on my screen .. What i must to do guys .. ?