Didn't see this aspect specifically mentioned before, but if it was - here it is again.
If I start a game with 4 players and take the time to play through, and say 2 players quit near the end of the game, I don't get the credit (experience) for "finishing" a 4 player, only credit for finishing a 2 player game.
Recommend experience awarded at the end of a round be based on number of players that start or possibly number of players after 4 holes are completed.