I've gotten so much good info here that I'll try it again.
I have a set of 3 games that are very old. The oldest one I originally got free for Upgrading my Norton SystemWorks way back around 2004 (before Peter Norton sold out to Symantec). It was 16 bit! I replaced it and got the rest of the set on CD from Amazon a few years later. The game set -- Rahjongg. They are so old they do not have windowed mode.
I had a lot of trouble getting the graphics to work under Win 8.1 but used DGVoodoo2 to get past it.
The games technically work under Win 10 even with correct graphics but the mouse is so doggy that it's not funny and makes the games impossible. There is no "relaxed" mode on games this old so I can't do that and just fight with the slow response.
I have other games that are even older than Rahjongg where the mouse works fine. Does anybody know how to get normal mouse response with these games under Win 10?