I've been uninstalling and re-installing some mods, particularly Simply Bigger Trees SE, and I updated a few other mods. Then I noticed something on loading a recent save: trees are completely missing near me. There are trees in the distance, but when I approach them, they disappear.
My saves still have trees, I've even loaded one with a tree in the save screenshot, but when the save loads, the trees are gone. I've even tried a new game and and the same thing happens. So it's not baked into my save.
I use Vortex to manage my mods; I disabled all mods, uninstalled SkyrimSE, deleted the game folder, reinstalled SkyrimSE, and re-enabled all of my mods -- and still no change.
My collection of mods hasn't really changed, except for a few mod updates. The only tree mod I have is Simply Bigger Trees, and all I did was uninstall and reinstall that mod and install the optional HD textures, but that's it.
Apparently SBT involves dynamic terrain, and as far as I know, I don't have any other mods that have anything to do with that. I've looked on the mod's site and it says "weird tree LOD" is usually due to a conflicting mod, but I didn't really install anything new and I can't think of anything I have that would conflict with this.
Here's my load order: https://pastebin.com/USbr0iLb
Can someone please provide some advice?