Just worked for me, too, with RC-Pro!Turn on your mavic 3 wait that connect to 8-9 satelites. By mine is this in 20-30 secounds. Turn off wour mavic wait 5 secounds and turn it on. Mavic will record home point imediatly! And with 8-9 satelites. Just try it and report back.
9 satellites within 40 seconds on a completely cold boot.
Turned aircraft off and then on, and Home Point set by 1 minute 20 seconds from original bootup, with only 9 satellites!