What you say didn't make sense - since I assume fans were being used to cool the batteries. I'm also of the mind the battery cooling system had a water-to-air set up - a heat exchanger (aka a "radiator"). So that wouldn't have an effect on the cabin's temp. Pretty sure this is what was being used on the P85D I had before this (which I did not have issues like this). However, according to the PLAID manual, it says the compressor is ALSO used to cool the batteries on hot days. This might be the culprit (and what I would consider a bit of a design flaw - there should be a separate compressor each purpose - dumb to rob cooling in the cabin to keep batteries chilled. I have to sweat? That ain't right. I was on the freeway, sure, but is that considered "driving at high speeds"...? Some old timey cars - ICE - like my old Porsche - would cut the compressor out on hard acceleration, but that wasn't because it was used to cool the engine, but because the compressor has an "insertion" loss in the system - and power it uses to spin it is power that's not going to acceleration. But that would only be a brief cut off. But it turns out the PLAID also has both a liquid heat exchanger with coolant, AND it shares the compressor with the cabin? Hm. That's kinda screwed up. I might take it in to make sure it's working properly.