Xperia Play Graph Settings

[miroo]

We have new version and may be we need new settings for Xperia Play.
I watched a video in youtube and the guy there recommended CPU clock 1000. I tried this option and my games worked fast and good - lego indiana jones and lego pirates of carebean.
but we also have new setting - bufer rendering. when this option is of the games works very fast but at some place they are ugly - the missing textures or light problems, i am not sure. when i turn on (the 3 other options of this setting) the game is looks better but speed slow down with 50% or more. Lego pirates only works with gpu buffering.
So is there other opinions?