With all of this "project butter" does 4.1 finally solve the live wallpaper lag issue? I know its not a huge deal but its always been something that has bugged the heck out of me. either way already ordered my 16gb
For my phone, it depends on the wallpaper. "Water" causes lag, but "Holo Spiral" and "Phase Beam" don't. Although with all that GPU in the Nexus 7 it may run all of them well.
Processor speed and type will fix that more than an OS update though - i.e. - why S4 equipped devices don't see that lag anymore...Nexus 7's still would (SOC isn't as fast as S4)