Update 16 changes how co-op characters and companions persist.

What should you do before your next session?

• Joining a friend with an existing characterChoose a single-player save before joining. Appearance, equipment, regular items, gold, skills and perks come with that character; quests and quest items remain with the host.
• Guest saves and companionsUpdate 16 saves guest progress every 30 seconds, makes companion permadeath optional and keeps dismissed companions marked on the map and compass.
• Camera movement or a new slowdownInstall Hotfix 10. It follows the Hotfix 9 camera correction and fixes the performance regression introduced by that hotfix.
• Getting around fasterOpen Accessibility options to enable fast travel to discovered points of interest. On mouse, custom waypoints now use right-click rather than a double left-click.
• Playing co-opUpdate 8 reduces revive health from 40% to 20%, so a revive leaves less room for the next hit.
• SpellcraftingUpdate 8 adds Fortify Magic and Fortify Stamina. Update 7's multi-effect spell fix and Update 6's identical-effect rule still apply.
• The Bones BelowUpdate 8 fixed a dialogue event issue affecting this and three other named quests; Hotfix 9 then clarified its directions and updated its logic.