Just to add, you can't run Win 3.11 WFW in standard mode. Running "WIN.COM /S" will throw an error back. So the only solution for Win 3.11 users is to disable hardware virtualization (Intel VT-x/AMD-V). I also tried upping the display colors by using the instructions here
to install a Super VGA driver that can do 1024x768@8bpp, and under that, the mouse does work better
, but if you move too fast, then the cursor still behaves very erratically. It almost looks like Win 3.11 isn't polling the driver fast enough (or too fast?), so if you move the mouse too quickly, it gets inundated with data and throws off the cursor. Dunno, just a visual observation.