A little more info…
My issue seems to be a player/epic id related.
PlayerA: Epic Creator Account Owner (Windows PC)
PlayerB: Administrator on Creator Account (Windows PC)
PlayerC: Administrator on Creator Account (Windows PC)
PlayerA and PlayerB start a game ALWAYS on same team.
PlayerA and PlayerC works great!
PlayerB and PlayerC works great!
PlayerA and PlayerB and PlayerC start game, PlayerA and B on same team, PlayerC alone.
If PlayerA and PlayerB are in the same game they get matched onto same team.
FYI I am controlling all three. All three PC’s on same router/internet connection.
This is only on Private Versions. In UEFN edit more works perfectly. I have uploaded about 20 different private versions changing every single setting/device I can think of to get FFA working and always the same result.
All three accounts are also Friends. They NEVER join in a party. Sometimes I key the private code, sometimes I click on “join game”