FRIEND CANT JOIN GAME=black screen then kicked(PS4)

(PS4) So my friend is unable to join any game. He said it worked fine this morning when he played with his gf. I can join his gf game just fine, but his screen turns black when he enters the map and then he gets booted…he has no problem playing online in other games that are more populated. (He tried restarting everything along with router, still nothing)

Anyone else having this problem?