Not 100% yet, but it is beyond a day/night difference. No more randomly spawning enemies behind you and the zone is insanely lively now! Constantly coming across NPCs in a variety of organic ways.

Within the first 20 minutes of picking up from my last save (110GB update btw) I came across a couple of warring factions and I noticed another group off in the distance watching. I went over behind them and they were talking about waiting to see who won and they would ambush them to get their loot. Once it started getting dark, they attacked the survivors and looted them. I proceeded to attack them and got the loot they just looted lol. Which turned out to be pretty god tier stuff. I never once actually interacted with any of them, but I watched everything play out.

I read another user who came across a faction getting attacked by a couple of bloodsuckers. A search party came by a few minutes later after they were all killed, and they were expressing sorrow for their fallen comrades. The guy attacked them and stole their loot. He went to a nearby town which turned out to be where the group was from. He was wearing their armor and townsfolk recognized it and killed him it blew his mind how that all played out.

I would say the game is 1 or 2 patches away from being in a perfect state. 

Wow, that's sounds marvelous, just as I hoped. Other open world developers should really pay more attention to this kind of stuff and implement more of world simulation mechanics into their games, cause this is what open worlds should really be about.

Can't way to play it...somewhere in February, when I'm finally out of crunch.