Hi guys, I was having the same problem as well. The way I fixed it is by deleting a bunch of save files that i have in my ps4. I only kept the one where I'm at the groundbreaker.
I wasn't able to properly talk to the whole crew of NPCs in the groundbreaker only giving me fast dialogue and empty voices but when I deleted most of my save files it worked.
You guys can try deleting some but not most of your save files if you guys want to test it out.