We’ve deployed a hotfix on Steam to improve matchmaking. 
 

Steam 

Hotfix v1.1.1 

We’ve deployed a hotfix on Steam to improve matchmaking and fix an incorrect error message. 

Hotfixes for other platforms will follow as soon as possible. 

• Players choosing Select Job to start missions (instead of Quick Play) should now experience much better matchmaking, with far fewer solo matches. This significantly improves cross-platform matchmaking for all players. 

• The Host leaving the party now shows a "Party disbanded" error message instead of a connection error message.