That's in resolution mode?
It shuts down in co-op for me at times and has a few game breaking bugs appear every now and then
It went down four points, and from a review perspective, an 81 is much less appealing then an 85.
Obsidian lost it's bonus because of 1 less review point for New Vegas, so don't pretend that a 4 isn't a steep drop. An 81 is a "strong" an 85 is a "mighty" on opencritic.