I belong to a private club that allows fivesomes even on the weekends.
My regular Saturday group is a fivesome with a 2, 8, 9, 12 and 18 handicaps (I'm the 18).
We are often the first group off and we can get around in under 3:45. This is even counting at least 10 mins at the turn getting food and flirting with the server.
Yesterday we were followed by a threesome and they were at least 1 and 1/2 holes behind by the time we finished.
The pros keep track of the times of the first few groups in order to keep the pace of play going for the day.
We know that we are one of the few fivesomes allowed so early in the morning.
We don't feel like we are rushing.
1. We don't walk around in a mass waiting for each other to decide on the distance, grab a club etc. We walk directly to our own balls and often we will walk ahead (to the side) as far as possible to our balls.
2. We usually continue putting thru instead of marking and waiting.
3. We play ready golf.
4. The first player to hole out will go to the next tee box and tee off.
5. We don't have all five of us looking for the same lost ball.
Now it does help that I belong to a mature old style golf course where the holes are close to each other, the greens are tiny and there is not a lot of deep grass between the holes. Rather the hole are separated by mature stands of trees so it is easy to find errand balls.