I don't get these low numbers. pathfinder's default assumes four but back in the day 6 was kinda the ideal party. If we did not have enough players sometimes someone would control two characters.

I have read stories that D&D in the 70s it was normal to have groups of 10-20 people. There were player roles like "mappers" for drawing the map. There was a "caller" who summarized the player moves for the GM.