Originally Posted by soldat7
Try the game on your iPhone or iPod Touch. The framerate is much worse on the iPad 2. The most likely culprit seems to be the large scrolling backgrounds, according to another developer who posted yesterday.
I played several hours of the old version in 2x mode and it was buttery smooth. The game is still playable currently, but very choppy compared to the non-universal version; not quite as bad as something like Inotia, but it's very rough.
I had difficulty initially noticing the framerate difference on my iPad 2. iPad 1 is very noticeable, though.
The culprit was a UI bug. A UI layer designed for retina display on the iphone was accidentally switched on for iPads during that quick hotfix. With it turned off in the update we submitted last night, it runs at 60 FPS again. That's on iPad 1 and 2, though it can dip a bit on iPad 1. With the UI bug, the FPS gets locked to a cap of 40 FPS, never going higher.