When unconscious, it lasts for 45 - 60 min. sometimes not ending at all, making becoming unconscious a real bugger, especially if you play with group as it either forces them to wait an hour for you, or you simply re-spawn (a lot more practical since it's no guarantee you'll even wake up after an hour, most of time not) spend most your time finding each other again after you're forced to shoot yourself. Also, it happens too often, too easily, so in a 6 hours play-through with a group, we spent 85% of that time trying to find each other after re-spawn. So either shorter unconscious time, or group spawn/group localisation is needed. Possibly some function that will allow you to "be in group" with someone, so that you auto re-spawn closest as possible to them, and can somehow figure out where they are. That way playing with others won't feel like a waste of time.