yeah, maybe we went a little too crazy with the effects, I'm looking for some way to optimize the render time (since I would rather not give up on them)
Thats not a bad idea at all, I wonder if I could also do that for the normal tiled background, since Quinjao (artist) has some lag while playing normally, thanks for the suggestion, I will try it!
I don't know if it worked since the background is a tiled object (instead of a sprite), but I re-uploaded the demo letting the engine strech it and also touching anothers optimization option, I hope it fix the lag issues in the boss fight!