Try the turning on the setting for Recirculate Cabin Air. The AC won't have to work as hard, use less of energy. The Tesla Voice Commands "Recirculate" and "Fresh Air" make it easy to turn this setting on and off.I was also thinking it wasn't the best AC a week or so ago. We have temps in the 100s. Another user pointed out that if you open the HVAC controls and touch the passenger side, it will turn that vent on. It defaults to off when you're alone. Turning on the passenger side vent solved any complaints I had about the effectiveness of the AC. I have it set to AUTO and 66 or 68 degrees to be comfortable on triple-digit days.
I work in Palm Springs and I had the same problem (temp set to 70F, auto) outside temp 125. My head was so hot, I thought I was getting sick from heat stroke. This went on for a couple of days until I installed a sun shade on the roof and it helped a lot. I am going to install film on the windshield and roof to help reduce the heat transfer. Try using a shade I think you will be happy with the results.So this week a spent a few days with my wife's MY and let me tell you the experience was less than pleasant.
It's been averaging in the 90s here this week which is typical for where we are at so nothing outside of normal temps.
Most of the time during these few days the vehicle has been uncomfortably hot, to the point of me constantly sweating in it.
While charging outside I was running the AC on 8, low, recirculate on. It was 79 in the cabin and you couldn't touch the roof inside for more than 2 seconds.
While driving around the city I had the AC always at least on 6, sometimes 8, low, recirculate on. Temps were averaging 78 in the cabin.
I was wearing a cotton polo shirt and cotton shorts, my entire back was completely wet from the damn seats.
Since I'm bald and 6'3 I can very well feel the huge amount of heat radiating off the roof and basically frying my brain.
One day I had the car parked at the airport (cabin overheat is on), had climate control started on low 15 minutes prior to departure and it was still 79 inside when I departed.
How are people surviving in places where the temps are above 100 is beyond me.
I am thinking of buying a sunshade at this point.