I performed some tests to determine the height at which the drone stops when doing a RTH with Dynamic Home Point active.
I set the Auto RTH Altitude to 30 m (~100 ft) for all test cases. I started the RTH with the aircraft at 40 m (~130 ft); 30...
I can confirm that DHP is available on the RC2 with the Mini 5 Pro. My testing resulted in the drone stopping about 20 feet above me, and waited for me to perform the landing.