I've been pretty insulated from bugs so far, so I may just be lucky. On console; I've had one crash and maybe 4-5 instances of freezing for like ~5 seconds, then resuming without issue. Only "bug" I'd say is once Andreja went stealth, then her head stayed stealth but the rest of her didn't. Dismissing and reacquiring her as a follower fixed it; no restart or anything.