Having done
a sizeable amount of research on the subject, I would say that this would probably matter during tournaments, but likely doesn't make a difference in day-to-day golf.
The vast majority of slow pace is caused by profit-oven-pace tee time intervals paired with sub-optimal routing. The carry capacity of holes is the obvious culprit, creating pinch-points that back up even when "fast" players are playing. On a non-beginner course, focus on pace should almost exclusively be on management understanding the courses
real carry capacity (not what it "should" be), while in development, trying to keep sub-optimal carry capacity holes (par 3's, reachable par 4's & 5's) very early in the round.
Most people care more about perceived pace, rather than
actual pace. I propose the best way to deal with this is providing elegant distractions (halfway houses, photo opportunities, bathrooms, etc.) exactly at the places where a course is known to back up.
The archetype of what I'm talking about is Lincoln Park GC in SF, with it's back-to-back challenging par 3's as
16 &
17. Combine these inappropriately positioned holes with their quick intervals, it is not uncommon to have the course back up 3+ groups exactly here, leading to 5-6 hour rounds. Simply installing a food/beverage cart or bathrooms would placate most of the players who wait here every day.