I have tested the Darkplaces Quake PND @ 800MHz, and this is what I found:
Framerate is usually good, over 20 fps, but explossions and other FX using dynamic lightning, cause massive slowdowns. Setting to OFF RT DLIGHTS and RT DLIGHTS SHADOW (inside CUSTOMIZE LIGHTNING MENU) helps a lot avoiding these slowdowns, but you loose the dynamic lightning.
I have used "revis" maps and tested water alpha, and it works great. I couldn't get water alpha to work with ZQuake-GLES.
I have yet to test music playback, but it's a feature I really missed a lot in other Quake ports.
Nub control is nicely chosen, but control has a big problem: it has a bit of latency, that make the game a bit unplayable! Did anyone else noticed the lag in controls?
Great work! I hope the lag in the controls can be solved.