Spent 80 hours figuring out how to stop endlessly respawning vehicle loot (and vehicles), disappearing horde bases and mines, and respawning trees.
This is not the most fun way I've ever wasted time.
I'm far from an expert, and my head doesn't work too well anymore either, but this is how it seems to me:
A21.2 seems to use an invalid value for the SaveDataLimit entry in the registry and somehow this doesn't cause problems. 1.0 uses a valid value for the entry, and that screws up A21.2 (I'm guessing TFP went with a fixed number in 1.0, rather than the -1, unlimited, that most people would want. And words could be said about using the registry for stuff like this, particularly for a game like 7DtD that people play multiple versions of, but nevermind).
So, on day 8-10, in five games in a row, I hit the limit and chunks started to reset, leading to an unplayable mess. I tried all sorts of things and it took quite some time to find out none of it worked (I hadn't imagined they'd be using the registry for stuff like this when they've added the " -UserDataFolder=" option, so I didn't consider the registry at first).
Apparently the SaveDataLimit can be changed in server config files, but there isn't any file that can be edited for SP games as far as I can tell.
Only fix I could find was to uninstall and delete everything to do with 7DtD, including the registry entries, and then install only A21.2 and DF. I didn't try changing the registry value, mind you, partly because I have a suspicion it gets overwritten every time you run 1.0, but I might just be in a pessimistic mood at this point.
Also not sure if other 1.0 registry entries might cause problems; it seemed like the first time I played A21.2 after having played 1.0, things were a bit wonky. Running A21.2, quitting it and then restarting it again seemed to make it less wonky, so there might be something there. Or I might have been hallucinating. Not sure.
1.0 isn't a priority for me at this point, so I've not really experimented further to find out which other problems it causes for A21.2.
Anyway, my Darkness Falls appears to be back to its former glory now (and V5.1.0 is really very pleasant. I keep discovering nice things).
I saw that in the last DF video, Khaine used a console command to set SaveDataLimit to -1. Does that get saved somewhere or do you have to do it every time you play?