3-way multiplayer iPad mini crash on connect

Game crashes when trying to connect a 3rd player when all 3 are using iPad mini.

Very infrequently, all 3 can connect and play.

Only seems to occur when all 3 players are using iPad.

3 iPads = crash on iPad #3 (and sometimes also crash on iPad #2)
2 iPads + 1 iPhone = works
1 iPad + 2 iPhones = works
3 iPhones = works
2 iPads = works