Can't really see what is going on. High speed cameras require a lot of lighting and they capture the strobe effect of fluorescent lights. Film yourself outside and you'll be able to see the video better.
Also chck out this article if you haven't already: https://thesandtrap.com/b/playing_tips/filming_your_swing
I don't think using the range finder would speed up club and shot decisions. As someone mentioned previously, they typically come up with the yardages pretty quickly and the majority of the time before the shot is the discussion of wind, elevation, lie, landing area, potential roll out or spin, etc. I'm not against them using range finders, I just don't see it making any difference in pace of play.