Yep. I have good net and have never had an issue until just recently. Going wired instead of wifi did seem to fix the issue, but that is only a band-aid. I think there is an issue somewhere either in the game or in the system software. Something is definitely jacked up and I hope someone is looking into it. I wonder if it has to do with PS5 cross-play.
Same thing is happening to me as well. I'm trying to do relic sharing and I get an invite to the squad, we all select the relic and when it goes to launch the mission is says host migration and then says failed to create session.