Potty, you made my day
Although I don’t know Spanish (or whatever language it is) I glanced over potty’s blogpost Problema Fullscreen Flash y Compiz. It caught my attention and I quickly googled up Secrets Of The mms.cfg File. I tried it on my home laptop (nvidia binary drivers, Compiz) and voila – finally the fullscreen flash doesn’t stutter when moving the mouse cursor around. Wow!