I'm not quite sure this is the right place, because I don't even know if this really is a C2 Bug:
Eversince I updated to Firefox 22, all C2 Games started to stutter and FF almost melts the CPU. It seems to be somehow related to that newly implemented "OdinMonkey" thing I'm not really sure about what it exactly is or does - it's supposed to generally improve stuff, as far as I know.
Steps to reproduce:
2. Play a game/Start a preview
Game stutters, CPU nearly explodes
none of the above
Internet Explorer: ?
Operating system & service pack:
XP SP3, FF 22
Construct 2 version:
Plus my start page looks like this: