Thank you for such a fast response. Everybody starts somewhere, and my place to start is at early retirement, with some time on my hands and zero expertise, pretty much from the scratch - which means I'd love to be able to provide what you have requested, but I may not know (yet) how to. I will do my best though to both learn and be more descriptive. Apologies in advance if this is not the standard expected / required, but that's all I can do for now - here we go...
1. I have read all the links you're attaching to allow you for better troubleshooting, and with best intentions I don't know how to provide a log of what I am observing in the game - as there's no bugs or errors to report or log. Maybe it's just my lack of knowledge.
2. I have just learnt (which shows I guess my expertise level) how to make a screenshot with the model ID with precombines off, here is the link:
https://imgur.com/a/S5rqme1
3. The problem with looking it up in xEdit is that it definitely doesn't show what you said it should, but some INV_CloudDistant... Which probably means I got the ID wrong and most likely don't know what I'm doing. I hope you see though that I try and not just throw nonsense at you.
4. So here's a recording showing the issue and how it disappears after disabling LODGen Output, which sadly doesn't have any of the info required.
https://streamable.com/yf79af
4. I have followed the LOD guide on The Midnight Ride, to the letter, my understanding is that this is a very conservative site, not promoting wild modifications to the game, so the only third party LOD assets are from there - https://themidnightride.moddinglinked.com/lod.html
5. Texture load quite aggressively meant that in the originally posted vid (https://streamable.com/t4lgf3) textures look mildly appealing until you come near, and then suddenly boom - things look great. In an ideal world they'd look good from a further distance and not kill the immersion. Which I guess is a matter of loading distance?
Which I have tried to change in Bethini modifying [TerrainManager] fBlockLevel0, 1, and 2Distance and fSplitDistanceMult, but it didn't bring the desired effect.
6. I know I could just play vanilla without any mods (which means instead of this 1 flickering I'd have 1000 other vanilla issues), but I didn't start this path to give up at the sight of trouble. It's by doing, asking, reading that I'll learn. In case this is not a known issue, and I need to provide something more, I'd appreciate if you could tell me what and how... Meanwhile I'll be trying to generate LOD removing some of the textures from TMR and maybe this way I'll find the culprit.