Use C3 to update all my C2 games, but the use of RAM is multiplied by 3.
Just change code, the sprites are the same.
I think I found the answer to the problem.
In one of my games C2 generates 532 Spritesheet, C3 only 167.
C2 only loads the necessary sprite sheet into memory, C3 loads many sprit sheets with unnecessary sprites.
Against bigger is my game, more memory needs in phases that are finished long ago.
This is a huge problem for big-size games.
In this example you can see how C3 loads a Spritesheet 2048x2048 in the 20 fases that poses the game, The more sprites you have, the more Spritesheet you need to load in all fases of the game.
Sorry for my English... is very bad...