I haven't paid attention -every- time it happens, but when I have it does feel like the cursor lags and/or skips a bit yes. This issue is completely separate from the other issue I have with the scimitar though, right? Or are they related? I've also started to notice this new issue in games, spesifically SWTOR. Sometimes if I hold down the left mouse button to turn the camera (in which case the cursor is invisible while the button is held down), the cursor sometimes becomes visible for like 1 second, the camera stops moving, and then the cursor disappears again like it should.