I'm on latest edowar's CM7, got lag issue when playing Temple run on 35.7 kernel, but then after I set the I/O governer to Deadline, and CPU gorvener to smartassv2 or interactive X, it seems better.
From my experience with this rom, the gpu lib is not very good to play HD games (got so much lag when playing Asphalt 6, but not dungeon defender 3), or very much like fast moving graphic game like temple run. I've test to install the older gpu lib from 32.9 kernel (just the gpu lib, not the kernel itself), it gave me back low nenamark2 value, but the lag is gone like 32.9 kernel cm7, however, it seems making the fast locking gps not to be that fast anymore (wonder why, still need to play2 around again).
About the wifi, it really piss me off as it will brings the phone to sleep of death each time it goes to sleep although I set the wifi sleep policy to 'never'. however, the workaround would be to install Advanced Wifi Lock from the market for now.
thanks for the wifi suggestion bro!