I updated to 42.3 this past Friday evening. Next day I awoke to a LR RWD that suddenly felt much "punchier" through the entire band of the accelerator pedal than previously. Regen was smoother. Wh/mile also seemed improved.
Until I initiated the EAP trial. Seems that Wh/mile goes up when EAP is on, and perhaps because more battery energy is being used to operate the system. But it's early yet. I'm still "meh" about EAP, as I find the need to nudge the wheel now and then kind of annoying. It also takes some of the fun out of driving the car for me as well. I can certainly see EAP's value on long road trips, however. Heavy traffic...somewhat. Main thing is I don't have $5.5k to throw at it once the trial ends. If Tesla would break out TACC apart from Autosteer and offer it at a reasonable price, I'd go for it in a heartbeat.