Same problem here, i lost half or more of my FPS.
There is clearly a pb, hoppefully Ludei will correct the bugs, I suppose it's a part of the fact of having a new version.
I just hope that it will not take ages now to have updates, cause just right now, Cocoon is useless.
Oh, and another pb i have with that version : if i put a tile with 50 % opacity, it appears with the value of 100 in cocoon, so no transparency for tiles for the moment it seems, at my end.
Whatever, eventually waiting for a new version of Cocoon that works and offers memory manager, i decided to work with Ejecta on ios : there is no memory manager, but everything already works perfectly, at least, for my project (i guess it depends of what you want to do).