Freeze Lags and Slow Control Response - (PUBG: BATTLEGROUNDS)

after the recent major update in September, the game began to amaze with problems.
in fact, everything was ok until the moment I entered the training ground ... at which a very inhibited control response began. in places the problem disappeared in places it reappeared. but now it has appeared already in normal modes. 10 minutes of the game everything is ok and then it starts ... you release the keyboard and the mouse ... and everything runs and goes and so on by itself.
the computer is fine. loaded by as much as 30 percent. in general, I did not find an answer why all this. some say the server .. others say a router ... but judging by the data, everything with the Internet is ok.
if anyone knows the reasons or solution to this problem ... I will be glad to your answer.