Performance on the desktop, at least for me, is great. Mobile games have good performance as well, even on my comparatively ancient Galaxy Note 2
Most mobile games are a joke, the top selling games rarely have more than 50 sprites on-screen at a time, and yet you see people here wanting to create mobile games with 1000 sprites, all with physics enabled and two/three effects
How do you export your mobile games?
Cant confirm this. My sample with 2 sprites, 1 has bullet behavior is jerking on PC using chrome and on galaxy s4 exported with intel xdk crosswalk <- prefered method by scirra
So for me it has nothing to do with 1000 sprites.
There are 100 of posts where people are wailing about the performace on android....