So I have now had a few flights with the 1.6 firmware on my P3P and so far glad to say I have had no issues. I went on a quick flight after the update, around 2200 feet out and 400 feet up no problems. It was cold outside, around 55 degrees so I only flew for about 10 min.. and kept an eye on the voltage meter. Wow these batteries drain fast in the cold, I will only fly with a fully charged battery. I didn't really notice if the P3 was slower, I know I did at least 30 mph during the flight.. So far I don't have any problem with the 1.6 update, but seems like many are hating it..