kenli
I have not seen you *capx so i can't say anything if it is a Bug or your Test limitations....FPS in CocoonJS looks good and it is playable for some
Games too...
I have tested out a lot of different Games - with sounds, Physics etc.
Here for example another Screenshot:
Jump and Run
The FPS is good - but when the Fun (maybe with Physics etc.) should comes up - it slow's down to maybe 10 FPS...and that is to slow.
KMag