Dungeons\Mines\CaveSmallHall\MineCHall1Way01.nif
A long vine hanging down from the ceiling on this cave piece mesh looks as if it's a crack or seam when viewed at a certain angle. The first screenshot shows what I'm trying to describe. The second screenshot is what it looks like from the opposite side, which looks fine.
Example: 0001F45E
(1)
https://postimg.cc/94K45MGt
(2)
https://postimg.cc/8Jv71S47
Note: Assuming you're able to see a problem, this may be something that's so minor that there's no point in messing with. I don't use any mods that would change the way textures or meshes look. It's unlikely, but I can't completely rule out it having something to do with a recent driver release.