Hovering: It is quite stable and flyable in hover mode. At least, it is until it will suddenly point the noise vertically downwards and starts falling. With enough height, it will recover automatically but there was close call at the end of the video #2. What causes this, you ask? Maybe it’s the PID’s, maybe it was the wind pushing the bulky nose down, or maybe it’s preventable. I’m not sure.
Transitioning: The transition to fast forward flight has always been very uneventful, you have plenty of pitch authority the whole time.
Forward flight: It has plenty of power during hover flight, yet it feels underpowered in forward flight (near-stalling the whole time). But it is flyable It was a bit unstable on the roll axis, which can probably be solved by adjusting the aileron throws.
In between HF and FF: The Osprey actually flies best in between hover flight and fast forward flight. It feels a lot more responsive and predictable. In fact, enough to make me confident enough to fly a couple of low level circles (in video #3).