I have the P3P and about 40 flights. Updated FW, everything calibrated and VPS turned off. Always take off manually and will pop it up to 8'-10' before heading out on a run. What's odd is that I'll take it up and hover and it slowly descends (sinks) to about 6' yet altitude will read 10' or even higher. Once it's hovering and I take it up another couple feet it's stable. Just seems to be the "sinking" happens on take-off. When I bring it in for hand catch it's rock steady. This isn't new and something I've learned to deal with since day one. Does anyone else have this issue? Other than that and the occasional pilot app crash it flies very well.