[NEED HELP] Missclick on Linux Mint Mate 19

Hello folk.
Could you help me with such problem?
When I play in SDL64 mode I have huge bust in fps on this system but fire click is not always work in time.
I've searched a bit and found only some possible  wayland problem. 
Show me the way.

Are you on Wayland?

Mint 19 runs Wayland by default  (but I'm not sure).
When X version running I haven't  any problems with missclick. In SDL mode Xonotic has almost twice more FPS.

SDL 2.0.2 added support for Wayland if you set SDL_VIDEODRIVER=wayland

Thanks a lot guys.
I'll try.

Thanks a lot guys.
I'll try.

I tried. It was Compiz joke.
Thanks again.