I'm running PCEM v17 on Manjaro Linux, and I've pretty much always had the problem that the mouse inside the guest OS (I tried Win98 and Win95) seems kinda sluggish, like there is a delay between moving the mouse and the movement of the mouse pointer. Also, not every mouse click is registered, I often have to click 3 or 4 or even 5 times to register a double click.

I've had this problem since PCEM v15, it doesn't matter which guest OS I install and it also doesn't matter which type of mouse (serial, PS2) I select for the guest.

Does anyone else have this problem or an idea what it could be?