Time issues are addressed in the FAQ.
Call quality is fixed with the new acoustic code. Hoping to have a build out on that soon (still some bugs with the new code). Most seem to be happy with flipping the speakerphone on/off as a workaround to get rid of the static.
As for performance boost, I've already made a thread on this topic:
http://forum.ppcgeeks.com/android-tp...ng-thread.html
I found using the SuperCharger script and setting it to the first "mega RAM" setting worked wonders. I'm sure it very aggressively closes apps, which I'm fine with. So long as the Android system is closing the app, there's no risk of data loss.