Okay, to keep it short, I have upgraded my PC and reinstalled SSE, and started redownloading all the tools and mods I used on a long term, stable play through; mods that shouldn't cause problems.
I checked the upload date of all the mods I downloaded and wether or not I'd downloaded them in the past, to avoid version problems.
I never got along with Vortex or other mod installer programs, just can't figure it out, so I manually downloaded the mods and installed them from file with NMM.
I cleaned all my master files with SSEEDIT, sorted with LOOT, used practically an identical mod list to the one I always used, and didn't try to do anything weird with the game, just to start carefully.
Places where I've CTD's in just a few hours of troubleshooting and playing:
The cooking pot outside of Riverwood just as I'm trying to use it
The hills between Riverwood and Whiterun
Whiterun square as I'm approaching from the gate
Further into the hills, near the bridge to Riverwood
In other words, it's completely random.
Now I did have problems getting SKYUI to play nice with the Frostfall and Campfire fix, so I uninstalled those mod fixes and just made so with Campfire alone. Still crashing.
I keep trimming and paring my mods trying to identify the culprit but it doesn't help. I'm now down to this load order, coming back from ANOTHER CTD:
The masters in their proper order
BSA Assets (Bruma and its plugins, only the official files)
SKY_UI_SE (5.2 which has been out for 2+ years now)
Cloaks (of Skyrim)
Container and Arrow Weight restriction
1nivWICCloaks (Winter is coming)
Cloaks - Dawnguard
Hunterborn Leather tanning (requiring animal fat to tan, I never used to have this installed so might be worth trying to take out?)
Hunterborn Campfire patch
Hunterborn iNeed patch
I used QUASPIC to ensure everything was patched and compatible with each other.
I use SKSE 64 2_00_19
What in Sithis name am I doing wrong? I'm out of ideas here. If anyone has an idea I'd be really thankful.
Edited by Rainboscape, 03 May 2021 - 06:17 PM.