I already followed some of the optimization suggestions, from moving all sprites that use effects that are similar to the same layer, or just removing them. If i use a browser i get steady 60 fps, i have under 20000 collision checks happening at the same time, not a lot of objects using physics etc, webgl activated, a bunch of stuff, the difference between the performance of the .exe and the web version is massive. playing the .exe is almost like playing in slow motion.