Woogal has updated GP Quake to v0.5. The official page has not been updated yet, you have to get it from GP32x. Changes:

* Added to the options screen is the new Double Size option>>Frame rate is improved significantly, and the graphics don’t look as bad as you’d expect.* Sound. Only samples at the moment, but it should be possible to add fake cd audio by using .mods.* Also tidied up the code in a few places and that may have effected the saving problem. Hopefully the problem isn’t as bad now but it could easily have become worse. I’ve tested by playing up to level 4 and not had any problems so far.