I was down in Kansas this last week where it got up to 104 degrees according to my vehicle. It was sweltering hot, there were sustained winds at 10-15 mph, and there were wind gusts up to 30 mph. I flew my P4 anyway, but it seemed to have some issues with the transmission of the video. It seemed like it would work ok when I wasn't recording video, but as soon as I started recording, the video signall would cut in and out. It would play at maybe 1 or 2 frames per second on my iPad, even when i was as close as 200-300 feet away. Thankfully all the video looked fine when I downloaded it, but it definitely made it a challenge to shoot that day when I couldn't see an actual live preview. It's very unusual and other than that day, the performance has been great, so I'm wondering if it was an overheating issue.