When everything clicks, this quad rolls inverted, drops over the treeline and comes back out of a power loop looking clean. The maker is working on split-S maneuvers and the run where the tree pass flowed straight into a power loop was the highlight for me. That is the kind of sequence that only looks easy when the timing is right, and here it clearly was.
The rig behind it is a Geprc Vapor X5 running 6S. The onboard footage was captured in 1080p at 100 fps, which gives plenty of room to scrub through each maneuver frame by frame. On the tuning side, the maker runs 0.28 expo across roll, pitch and yaw, plus 0.15 expo on throttle. I think that much expo on all three axes is a sensible call for precision acro work, where small stick inputs need to stay predictable near center.
The technique itself is methodical: a throttle blip at ground level, then a 180 roll to invert with zero throttle, using the flight path to carry the quad over the trees before throttle is applied to tighten the return. Practicing to hold the roll axis centered in the frame and to stretch the inverted time further sounds like a smart way to build the skill properly rather than chasing luck.
It is not all landing yet, and the maker says so plainly. The inverted maneuver only comes off about 10 to 20 percent of the time, the opening alignment was off at the start, and the final attempt was cancelled when there was not enough forward push. Oddly, the flight felt intense in the moment but looked slow and wonky on playback, which is a curious gap between feel and footage. Getting more comfortable with each session seems like the honest trajectory here.