I don't know, but golf has strict time guidelines for play and players that fall behind are penalized. That's why golf on TV runs on a pretty predictable schedule.
Hence, there is an implicit pace of play mandate that must be adhered to in golf. In pool, the pace of play is monitored with the shot clock, and in this case, I like pool's methods better. Unfortunately, pool only uses a shot clock some of the time. Even in the majors, this is true.
Slow play can ruin both sports, rendering them unwatchable.