Weird flashing lines/light issue

[JustCanerom]

Solved somewhat - TD;DR i have a 21:9 monitor and up until now havent had issues with it but oh boy Skyrim has some disagreements with it, grabbed a spare regular monitor cranked the FOV and am not having that issue, now just have to redo all my settings 

 

I've been using the SME Wabbajack modlist as a base to finally make a mod-list that i can be proud of so I've been a little nit-picky (sry) 

I don`t believe its just a monitor issue because its only in Skyrim and is situational (which is when i look at lights which is shocker, quite a lot)

Through this entire process I've done tons of optimizing with staying on top of patches, conflicts, version types, and done a lot of optimizing and .ini tweaks so honestly i cant remember all I've done to Frankenstein this code monster together, but I do remember some bigger changes i did

-In GeForce experience I've set the Antialiasing to enhance-application (FXAA*, 4x w/gamma correction) *I prefer this to the other option as that one introduces a lot of ghosting in my case

-In GeForce experience I've also set the verticle sync to Fast (that could be the totally wrong play idk, feel free to bash me)

-in SSE Display tweaks I've enabled its Vsync in the .ini to 199 (i have a 200hz monitor) and disabled EnableTearing

-I've used the Mid Beth.ini preset and after applied the recommended tweaks + I also enabled the TAA Antialiasing in the tool exclusively which somehow combined FXAA and TAA and gave me best of both worlds (smoothness of TAA with the optimization of FXAA) ~ this could be dumb as rocks i am willing to change this

-Installed ELFX, Fixes, Interior Fixes

~a example with doo doo recording because it was the easiest way 

https://drive.google.com/file/d/1XWK6wkS2WyMgvR6L7LpvzYRdbH6AckF1/view?usp=drive_link

You can probably see what im taking about best at the beginning of the video looking at the smoke in the background 

Edited May 23 by JustCanerom
fixed a typo, edited title, added "solution"