At first I was testing my game on the computer only. Going fine with whatever version of xcode I had downloaded (3 something). But then to get my game running on my ios5 device, I had to upgrade to xcode 4.2. The "Run with Performance tool" option has vanished. I opened up 'instruments' separately, but I can't seem to get any sort of live read of what's going on. I can't find any logical information about it in xcode's help, and my searches haven't turned up anything.
I went from one game with this engine to another, and this one's running much slower. I'm just trying to get an idea of what the problem is.