In my experience OpenGL is very buggy. A PSX emu for Android got considerably worse when they implemented OpenGL support. Nicer graphics yes, but much more buggy.

On a sidenote. I'm not willing to give up on my N9 quite yet. I have set up rules so that it only uses 3G when I'm on the coutryside where it works fine. When I get out of this area the phone uses 2G only and so far that has worked without problems. The 2G network in town is pretty fast anyway so I can surf on it etc...

Looking forward to next release.