why silo running slow when i try to move the viewpoint alt +mouse key


I have double titian xp and ryzen 1800x running with Ubuntu *budgie *17.04 (newest Linux system ) but *why
I running with a high *delay while doing move or drag (Alt +rm or lm or mid)
Q: Any where to disable some function to accelerate the silo?
Btw *i am download from steam