Well, it seems you have a 832 MHz CPU with Adreno 200 GPU, so sure OpenGL won't work well on your device. It has about the same hardware as an HTC HD2 that was a star 3 years ago (not to mention that the HD2 could be overclocked up to 1.7ghz and remain stable)
As I said, openGL IMO shouldn't be used with single core CPU and/or more than 2years old GPU. It's not a bug, it's like trying to play a tegra3 game or the latest Gameloft game (with full effects enabled, not a limited version for low end devices) on a phone that can't handle it.
Today middle-end devices are dual core, they can use openGL, very high end devices are quad-core.
At first, 1ghz CPU was recommanded to use Fpse, it was before openGL was done. Now it's possible to run Fpse with 800mhz but that's the extreme minimum, and it should be used in "old software" or "blittering" mode.
A PC could hardly emulate the PS1 with 800mhz and 512Mo Ram only
So tell me what games have bug for you, I'll try them on my HTC Sensation and on my HTC One-X (Tekken 2/3, FF7/8, R-Type Delta, Tomb Raider3, point blank2, time crisis project Titan are the ones I've got on my phone now, all of them work well in openGL), you know, I've tested about 200 games since early 2009 for FpseCE then Fpse, so no, I can't try them all for each new version, but I don't play only Final Fantasy like many people here
Well i tried chrono cross on opengl and the menu when i started the game was messed up (it was on a previous version though)Whereas i admit that high res is very sexy on other games i tried it definately needs a dualcore and a better gpu.Over the years of experience with emulators i recomend pal versions of psx games for low end devices since the fps capacity is 50 and it has a slighty better resolution than ntsc(60 fps capacity).I always considered opengl plugin a bonus so it isnt a big deal.Oh and one request if it ever reaches Schtruck,i noticed some sound issues on resident evil 3 nemesis which i didnt encounder before it is like sound skipping on video sequences and i need some help with koudelka too, i stoped playing it because sound is terribad on videos is there any tweak i need to apply?