Thanks! I've gotten similar feedback from others and have been working on it. Did you play the newest version, 210202.3?
I found similar problems in the last section of the new level, on version 210202.3. It worked fine for a while, and then for about a minute it was hardly 5fps, but got better after waiting. I also felt you could optimize the camera angle/ fov for the new level, but please don't feel obligated to do what I ask. I know its a lot work making something like this, and I think its really cool that you did this. Thanks so much! I'm sorry I cant send you any money:(