I'm having a shot at developing my first mobile game.
However I'm running into some rather large performance issues. I rebuilt a simple test and it seems that by exporting to CocoonJS I can get about 80 sprites on screen before it hits <10fps on a Google Nexus. My game is a variation of Tetris, so a 9x9 grid would be around 81 sprites on screen, not counting all the UI sprites and the preview blocks. Once the screen fills up about halfway it's pretty common to dip into the 15-20fps range.
I've seen a lot of threads about performance on mobiles, but should it be this bad or am I just doing something wrong? It's not like I'm doing anything fancy with the sprites. I've run the 'Sprites' demo in CocoonJS that can get about 400 sprites on screen before it dips to 30fps, so I'm not sure how it's doing that.