Nimbus VTOL first flight 4.1.1 - Low throttle output

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Attached is my first flight with 4.1.1.
Transition was smooooth, but then almost immediately lost forward airspeed and gradual decent , full throttle and nose up required to keep altitude, stalled a couple of times - think I managed a loop on 1 stall. I would be grateful if someone could have a look, Throttle was still set At 60% which was more then enough to it in the air at 23 m/s in 4.0.9. Lots of vibration in the Q - modes. Recalibration done after upgrade including radio.

Microsoft OneDrive - Access files anywhere. Create docs with free Office Online. - Bin file for the above flight.