If you play off 9 and average 4:20, that's slow. REALLY slow!
I play with an 18 and a 22 most Sat. mornings. I agree, we are not a fast group, but we're not the slowest either.
It is a group’s responsibility to keep up with the group in front. If it loses a clear hole and it is delaying the group behind, it should invite the group behind to play through, irrespective of the number of players in that group. Where a group has not lost a clear hole, but it is apparent that the group behind can play faster, it should invite the faster moving group to play through.
#1, this assumes everyone is four-to-a-group, which I almost never see on my course. #2, if the group in front is playing speed golf, is it your responsibility to keep up? #3 If I hit my drive out of bounds and the guy ahead of me birdies, you're telling me I have to let someone play through because I'm now a hole behind?
You can't put hard-and-fast rules on it absent a time limit. It doesn't work. There are too many variables in the game of golf.
Slow play is completely relative. I don't hold up play Sat am at my course and play a 4:30 hour round. Is that slow? To some people yes (as seen by this thread). To some people, no (as also seen by this thread since we are keeping up with the equally slow groups around us). I think its the perfect pace of play for a leisurely Saturday morning round. People behind me have disagreed before and gotten very frustrated with our pace, just as people ahead of me have gone slower than that and left me frustrated with their pace. if my course posted up a 4 hour time limit i'd comply or find a new course. In the abscence of a posted time limit, I pay my membership dues, and I'm going to play the round the way I want to play it, irregardless if there is some speed demon behind me who wants to play his saturday am round in 3 1/2 hours. Its not happening.
The point is that all these threads everyone just agrees with each other that they hate slow play. The anger/ire/frustration is misdirected at the golfers and not the course. Either get your course to post a a time limit and enforce it or find somewhere that does. Its annoying when people want you to play to their pace and you want to play slower than that. You have every right to play your pace and ignore them provided you are complying with local rules. In the abscence of a round time limit, a golfer is well within his rights to play his round his way, IMO.
I know this view is unpopular, but I don't think its fair to hold people to some arbitrary standard and get frustrated / pissed when they don't comply with your pace of play standards that they know nothing about and are not posted anywhere.