I made a little maze game, but I have lag/shuttering problem at the beggening of the scene. I dont know why, I only have 8 events and small 8 bits graphics. Maybe it's my active objets to make the walls of the maze (I have 358 active objects). Do you think it's too much? Is it possible to merge all the objects of the same kind together? Perhaps it could help too have only 20 or 25 long wall, instead of 358 little parts of the wall?
Or maybe the problem it's my background. It's an active background (the grey square), then selected an image to duplicate, a little grass title. Is it the best process?
Thanks and sorry for my bad english, it's not my first language.