I've been using version 0.1 with WinUAE for quite a while now, mainly to play Payback in Warp3D mode.
I downloaded the new version 0.5 last night and noticed that although many bugs have been fixed, windowed mode doesn't work yet, and I'm convinced that 0.1 was faster, particularly with busy scenes in Payback. But it's definitely a lot more stable and it works fine with
Payback,
MiniGL games, and the demos in the Warp3D install archive.
I hope that this continues to be developed.
Steve.