Hm, interesting. It may actually be the glass shader I made for the marbles. I did not find any good existing ones so I tried my best to write my own, but in doing so I may have made it really really slow.
My computer runs it fine at 180FPS without major issues, but it does use 60% of my GPU constantly. However, when I ran it through the godot editor instead of final build, it used 45% of my GPU in the same scenarios. If I disabled the glass material and used basic matte white, it used 5% less.
So at this point I am at a loss as to what exactly causes performance issues. its not the glass, that barely affects it. And it also seems to get worse only in an exported build of the game.
