I can play Toko in PVE missions and I can hardly crash at any moment. (Warface)

It all started with the fact that I downloaded the harmful 360 Total Security antivirus.
And he locked one of the game files.
Now I can play Toko in PVE missions and I can hardly crash at any moment.
In PVP missions, I am not allowed at all as the current loads-crashes with an error.
Suggests to send an error report-and what's the use? -Sending next time I go-the same thing.
I tried to reinstall everything the same.
!HELP!