Question / Help Lag whenever I open OBS

[Adaplexy]

So when I play overwatch without obs opened I have great fps and no lag, i can get up to 200 fps without it opened. But once OBS is opened I struggle to even get 30. WTF do i do? My internet speed is fine, 330 down and 30 up so that's not the problem

 

[Harold]

Turn gaming mode off in windows' settings and remove all display capture sources from scenes where you use game capture.