I've never had an issue with my P3. Then again I've been very careful to follow preflight check lists, and flight conditions prior to take off. I also follow various threads related to bad firmware and generally wait to upgrade till others say the coast is clear.
Having said that I try to pay attention to flight characteristics related to certain firmware. I've noticed drift on calm days from time to time but nothing that couldn't be adjusted. I've also been very careful in selecting aftermarket upgrades and add ons. Use common sense, be respectful of flight patterns, and remember responsible pilots are ambassadors. Help others understand what we do. Have fun
Happy flying
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