Slack mouse in games

Recently I began to notice problems such as sagging of the mouse in games. Such problems are noticeable after using Yandex Browser. Saves only the restart of the computer. In particular it is noticeable in PUBG and Fortnite (in other games everything seems fine). At the same FPS in these games above 60+ (in most cases from 80-110) and the load on the CPU/GPU reaches 100% (sometimes, but very rarely).
And before such was not, no matter what settings I didn't. Climb on the Internet I learned that many faced the same problem when I updated Windows 10 to Fall Creators Update (as I do).
Don't know what exactly is the cause of this problem, I would like to ask you what could be the problem.
Thanks in advance :3

My PC:
- Intel Core i5 4460 @3.2 gHz
- The Msi GTX 1060 3gb
RAM HyperX Savage DDR3 2x4gb (Dual-Mode)
- Mat. the Msi Z87-G55

Mouse - Cougar Revenger