From ESE53? None. I wouldn't be surprised if ESE81 is just ESE53 with the root exploit hole fixed. If anything, ESE81 might be a tad slower
Devious google... also, if its slower, I'm no longer thinking I want ese81 custom roms. Stick with 53
My kernel might be slightly older code, too. Whether that has an effect on performance or not, I don't know. I built it like two weeks ago. ESE81 was built shortly after. I'll recompile another kernel here in the next few days and test it again.