1.2 - Worst in performance than 1.1?

[DarkBolo]

A new version doesn't always mean better performance.
It could also means better accuracy in terms of emulation, which could have a hit on performance.
Maybe this is what you are experiencing ?

Is this a big slowdown ?
Do you notice this on all of your games ? Which games have you tried ?

Yeah, the drop is significant. I tried both GOW games, Tekken and Burnout.