I've pretty much completed my first level except...I have a wide open lower level that is filled with green slime/acid (about the size of a football field) (nice rippling effect.) Game play is choppy down there and I'm thinking it's because of the acid, I have about 50 total brushes down there so I didn't think it was the reason. Any ideas if this is probably the problem? If so, is there anything I can do to fix it without losing the acid (I really like it.)