Doesn't seem like there was any performance improvements done from 5.4. I was about to flash this until I noticed that. I think I'm just going to go back to CM 6.x or another Froyo ROM since every GB ROM has memory issues for me. Multitasking has been nonexistent and overall the phone lags after running for more than a day straight between reboots.
I can't wait to upgrade to the GS2 or Bionic soon. This phone had a great run, but it's definitely showing its age now, IMO.