Could you please diagnose my bottleneck?

[GuilhermeGS2]

One thing that bother me is that PPSSPP works with OpenGL ES 2.0, if implement a newer OpenGL, it wound't improve the performance on Android devices? PSP has simple graphics, a modern GPU wouldn't have great problems to render them since it's well optimized, and we have powerful GPUs nowadays, from 100 to 600 GFLOPs (I don't know about Adreno 540, I belive it has 700+ GFLOPs). Could a dev tell if the a newer OpenGL would improve the performance or not?

Anyway, CPU is still a great problem for PPSSPP running with OpenGL, I have a huge CPU usage in heavy games like God of War Chains of Olympus and Midnight Club 3 with Core i5 3470 (reaches up to 70% at one core and up to 40% overall usage).