It takes me about 11 mins to play 9 holes and 22 mins to play 18 holes. Roughly about 20secs a shot including taking into account loading time. Tee shot is about just long enough to drag back and click. Putts and flops take the longest though still no longer than 30-35 secs on average. Im not a particularly fast player though not slow either if not distracted by things at home.
The 49 round front 9 took about 10 mins as I was ripping it off pretty quickly. The further into the game the more deliberate I became on the shots. The putt on 18 for the 49 I bet I studied it for a full 2 mins looking at it from every angle chip and putter before determining it was in fact straight from every angle and executing the 7.4 putt Then it was peanutbutter jelly time
To think it took 30 hrs or even 1 hr to play a round of 18 is laughable unless stopping for breaks dinner trip to store etc
With buddies we sometimes play beat-the-meter and execute all shots within 10 secs or incur a 1 stroke penalty. No time for aiming, reverse views or changing clubs and still ,many of guys can shoot several strokes under par just early/late clicking with whatever the caddy gave them and adjusting spin.
A timer on single play wouldnt effect scores, it would just be aggravating is boss walks in/ wife needs bug squashed etc.
Below is example of fast play, watch and learn a trick or 2