I got mine December 24. Before it would take me 5+ minutes to walk to the item identify shop after finishing an UQ on Block 1 when maxed out with people. Now MOST of the time in same scenario I can do it in under a minute. There's still some lag but no where near as crippling. I typically just wait about 10-20 seconds after popping into the lobby from an UQ before moving. Most of the time that's all that I need. Clicking on npc to start a UQ immediately at start along with everyone else will cause about a 5/10 second lag at most. Before it was up to several minutes.
L/S short you will definitely notice a HUGE difference. It's not 100% better but it's definitely tolerable compared to before.