We had this issue twice yesterday in two different activities (missions). My friend started the activity as the host and first few minutes we had no issues. I think after I died first time my screen went black, I still could hear the sounds but could not do anything. I went to character selection by ESC menu and tried to reenter the mission by joining the fireteam again. When arriving I directly had the black screen and again could here the sound. I tried to restart the clientand rejoin: same issue. The same happened again in another mission. I rejoined with black screen. My friend died in that moment and I was spawned at his position and had an image again. Rest of the mission was without problems.