Alien Breed 3D II: The Killing Grounds (Amiga)

The Karlos Mod build of AB3D2 is used here. I'm running it on WinUAE64 with an Amiga 4000 spec (68040 with 3.1 ROM, 2 MB chip + 8 MB fast RAM). I gave it a 64 MB shot of Z3 Fast RAM on top of this.

Now make sure the JIT box is checked on the CPU and FPU page of the config, and also tick Fastest Possible under CPU Emulation Speed. The frame rate zips right along at a healthy 52.6! Not bad.

If the JIT crashes, leave it off. WinUAE64 does run on a Steam Deck, but I had no luck with JIT on. Just running Fastest Possible 68040 was enough.