I didn’t really doubt this, but you got me curious (doesn’t take much!) and I remembered to check this out today and thought the results might be interesting to others.
I set up my phone to take video at 240 frames per second and did in-place flips with my Beta 65S Lite (716 motors). I did this with both the low- and high-rate settings, which was still set at 880 deg/sec and 1100 deg/sec.
I counted the number of video frames that the middle 180 degrees of each flip took, so any speed-up and slow-down time at the beginning and end of the flip is ignored.
On the lower rate, I counted about 47 frames. At the higher rate, I counted about 38 frames. That works out to about 900 deg/sec and about 1100 deg/sec.**
So I don’t know what the upper rotation speed limit is for a 65mm whoop with 7x16 motors, but it is not lower than 1100 degrees per second. :- )
** 180 degrees / (38 frames / 240 frames/second) = 1136.84 degrees/second