I happen to leave my V1 under 92 degree heat for an hour and got back to driving. As soon as I got out of the parking lot, I encountered LEO with CO radar 35.5 on axis. Sad to say, detection was about 500-600 ft. I immediately touch the V1 and obviously, the casing was hot. I am really convinced that heat takes a toll on the V1 decreasing it's performance. I will do a test with how heat will affect the V1.
Just make sure your V1 does not get direct sunlight and expose to heat for long periods of time.