Fellow Houstonian here. I get random talk saying my battery is fine too. Kinda sucks when I've tried everything and a 90% charge sits at 259 or so on my LR RWD M3
90% LR RWD M3 2018 @ 252. Car was "supposed" to be 325, tho bought with 310. I wonder how they factor that in with the warranty? I feel your pain and compound it. Drops 5-10miles every 5-10k miles. I await 30% for warranty. I'm at 57k miles. Coming from other long term electric cars I've been quite disappointed with Tesla's performance. Tesla's checked mine out in the past and they've told me the same thing. All is normal according to fleet data. Yeah all is crappy more like it.
I already adhere to the rules of this thread for my habits, so hasn't been any improvement, just a steady decline.