Started this back up after two/three months without playing. I had a terrible experience. I was trying to continue the main story and the game would crash on me repeatedly. I was about to give up entirely, but on my 11th or 12th attempt, the area finally loaded. Loot was annoying to pick up for some reason and I would clip through stuff. Strangely, once I left that are after having defeated the boss, things went back to normal. I wonder what the hell was going on.
Anyway, I now have all companions accessible to me at this point (one more left), but I am probably going to use Vivienne and Solas in the mage role, Varric as the rogue, and Blackwall will replace Cassandra as the tank. The other characters will have to stay at home and be useless. I will probably bring them with me if they have personal quests, but that's it.