This is really ANOTHER 'slow play' thread, isn't it? Disguised with another question, but that is really the point.
I played with my common partner the other day, on a course with gps on the cart, and timing given as 4.5 hours. We had no one ahead of use, and one very fast twosome behind us, whom we waved through early. We finished in 3.5 hrs, an hour ahead of 'timing' given. Could we have played faster? Of course. Why would we? The day was great, the course was beautiful, and we were enjoying ourselves.
Today most courses have 'timing' given; usually between 4.25 and 4.75 hrs. If those in front of you are keeping such timing, mind your own business. If they are not, check to see if other players or circumstances are holding them up. If not, perhaps ask to play through. Most people are fine with that.
I, like everyone else, have been forced into long rounds. At Tot Hill Farm, it was 5.75hr. Fortunately, the course was so much fun we hardly noticed.
Mostly, I am in no hurry. I LIKE playing golf!
Maybe you could find some place where timing is 2.5hr, and enjoy yourself?
Doug