Hello Kevin,
on my end, Jagged Alliance 2 iterations (Vanilla, Gold, Unfinished Business and Wildfire) have not worked properly under Win10. This is another game that utilizes DirectDraw. The framerate is very choppy, unlike any other OS up to 7 (I never used 8).
If there were to be a fix to this, I would be very grateful as Jagged Alliance 2, albeit old, is easily one of my favorite games of all time, and I would love to be able to play it again without having to set aside a partition for WinXP or the likes.
Thank you in advance.