Agree with others on pace of play. I don’t think any one thing will speed it up much. However I think few items will lessen round time.
1) On the Green closest to cup tend flag in or out for players. When someone puts out they tend flag.
2) Ready to play your next shot.
3) If your on long Par 4 or 5 and you hit your drive 220-240(which a lot of us higher handicap golfers do) Don’t wait till green clears to hit your next 260+ yard shot. Thinking your going to get there.
4) Stop stacking 2-groups on shotgun starts on Par 3’s
Just my thinking on speeding things up some.