Bugs on latest build

[netraiderx]

I have 2 android phones, first sony wt19i ICS root and second samsung galaxy tab 2 7.0 Jelly Bean root, since update from v0.8 until v0.9.1-142-gfbfbe6d , latest version have bugs like volume button response became slow(long pressed to change it) and back button not working. There's graphic issue only on my Tablet when play game like the 3rd birthday, FF Crisis Core, Dynasty warriors strike force and many other.Latest build doesn't give graphic issue on Sony wt19i. Both of them have same setting. What's wrong ? Screen resolution, gpu card, something missing from v0.8 ?I don't know about that.
Sorry for my bad English,