I was terribly, terribly wrong. And I apologize.
I said that the update would not really do anything, but I was, once again, terribly wrong. Not only did most of my lag go away (everything besides wifi lag and a bit of start lag), but it seems to have made me faster as well. I really appreciate this, it's crazy. I can finally hang out in start! Maybe.
Thanks, whoever did this (snk? Stephan? I really don't know?), I love it.