Double check your file you flashed and let me know if it’s on strong filtering or weak filtering.
I keep bouncing back and fourth on what I think the best default is. In the last say or two I changed it back to weak filtering since my current 7mm was smoother on that, but I’ve hade some in the past that did better on strong filtering too. That’s the most likely cause. By changing the filtering we may break up or move a little resonance that’s causing your throttle to be jumpy right at your hover point. To be honest … I don’t really hover so I don’t pay much attention … I could run throttle on a switch