If you play games you'll want to disable mouse acceleration on your Mac. That's because while mouse acceleration can be great, it can cause inconsistent mouse cursor speeds, which is less than ideal when gaming.
Simply put, mouse pointer acceleration boosts the speed your cursor moves if macOS detects that you're moving your mouse at a certain speed or intensity. Essentially, it takes you physically moving your mouse more quickly to mean that you want the cursor to move fast, so it increases the speed even further.
