Mouse speed not constantly

Sometimes mouse speed up so badly in the game, so instead doing 45° it doing 360°, it`s really anoying. Sometimes it`s just speeds up and slows down just a little bit but it`s never perfectly have constant speed.

I have G500s logitech mouse. In other games it`s working perfectly fine. And friends have the same mouse «twitching» in minecraft.

Thanx.