I had a hankering for some Dungeon Keeper 2 and decided to pick up the GoG version rather than try and install from discs. I had a pretty awful time with massive stuttering and crashes with the default build.

However I have to say that installing DGVoodoo2 helped a lot, I also had the issue with the mouse pointer going crazy sometimes, zipping off the edge of the screen and getting stuck.

I haven't played long enough to 100% confirm this but this tool seemed to help:-

https://www.highrez.co.uk/downloads/XMouseButtonControl.htm

I used the following options for DK2

"Override mouse speed" and reduced it by one or two
"Enhance pointer precision" - Off
"Clip (lock) mouse cursor to active window"

Also bound home and end to the mouse wheel to allow me to zoom on the mouse wheel.

I also did the mouse lag registry fix as detailed here - https://www.gog.com/forum/dungeon_keeper_series/mouse_lag_solution (NoDTToDITMouseBatch)

Give it a try. My game still freezes up on exit though (and leaves itself on top of all the other windows so I can't get to task manager to kill it.. grr).

My specs - Windows 11 Pro, AMD Ryzen 9 5900X 12-Core Processor 32.0 GB RAM GTX 4090.

Just to follow up, the game ran much better but still has serious issues (bouts of severe slowdown/stuttering, audio stuttering, crashing).