quadruplesword: Descent 1 and 2, drop them into D2XXL, tweak the settings, they look beautiful and run like butter.

Descent 3, install the 32-bit patch, add the necessary command line arguments, in-game frame rate is stable but it constantly switches resolution when going through menus, which results in several seconds of black screen, and FOV is so narrow it just about gives me motion sickness.

I've wanted to finish out the Descent trilogy for so long, but all of these problems I'm having with Descent 3 just make it impossible. The killer for me is the FOV. I just can't play like that. Even if I can adjust to playing with such a narrow field of vision, it actually starts to make me feel physically ill after playing for some time.

Frustrating beyond words. I've had Descent 3 sitting on my desktop, taunting me, and I just can't get the bloody thing to play nice.

TheBigCore: Descent 3 is going to be open-sourced at some point in the future:

https://www.reddit.com/r/descent/comments/7rolxm/well_we_ever_see_the_source_code_of_descent_3/

Hopefully, whenever that day comes, many of these issues will be fixed, but until then, you'll have to live with them.