Antichit game constantly starts to lower fps to 20 in the middle of the match

Antichit game constantly starts to lower fps to 20 in the middle of the match, restarting the game does not help, pomagaetsya only check files where it finds 3 files antichit that are broken and constantly re-downloads them. In other games there are no problems, and only in Battlefield I play with 70-100 fps until again broken game files and does not lower to 20 fps.

On the last screenshot it is written that several files did not pass the check and will be reloaded, and on the screenshot above I screenshot those 3 files that are constantly updated in the game folder after reloading those 3 files.