Not sure if this is the right forum for this, but anyway... I've posted my extensive research into older games, to determine exactly when Nvidia broke support of earlier versions of DirectX. The sweet spot (if your card supports it) seems to be driver set 260.99. Read my full findings here, and contribute if you can. I've also submitted it to Nvidia. Once in the past my continual resubmitting of bugs got them to fix the slow-down-then-lockup bug with transparencies in older games, but I'm not holding out as much hope this time! https://forums.geforce.com/default/...ompatibility-with-directx6-and-earlier-games/ p.s. the listing layout ignored tabbing, so it's a bit messy, but you should be able to see what works with which drivers...
A good question would be: Is it possible to copy some of the driver files responsible for this from older drivers into the game directory itself? So that the older .dlls will be found there and used instead of the newer ones? This works for some Directx and OpenGL-versions atleast (some openGL games require a specific version of openGL, even if the newer one is fully compatible)