Games start to freeze when I start obs (in idle), for example, VAR in cs increases by +2 on average, what should I do?

Question

Video broadcast

Ready to answer all questions, describe what I did in order to fix the problem - for a long time, I have a feeling that there is simply no solution to the problem (
(I start the cs - in the game 400 fps and VAR 0.2-0.4 .. I start the obs and the fps becomes 100- 200 and VAR 1.7-3.0)
PS I realized that my whole computer hangs, it's just very imperceptible!

Answer 1

What is the nature of the PC. And how is the picture encoded during capture - by processor or video