In csgo I notice difference between 144fps and 300 fps for example. I would like to have +-300 fps on csgo but I'm having 150, sometimes it goes to 100 fps, that makes a lot of lag. I just don't understand why this pc , which is better than my old one, is worst on every game I tried. I tried csgo, pubg and fifa until now. In pubg I just get 80-100 fps and in fifa I feel a little bit of lag.