QuagaarWarrior

Something about your load order...doesnt look right. Have you definitely run LOOT on this? First off I think you should be using the ESM version of Vigilant which means LOOT would place it near the top. Also: Konahriks Accoutrements ICH-WACCF-VIS Patch.esp WACCF_KonahriksAccoutrements.esp ImprovedClosedfacedHelmets_WACCF.esp Are you sure you need all these?

Its because you have Rigmor of Bruma and Immersive Armors. Deactivate the RoB mod. Start a new game. Wait for the message that Immersive Armors has finished configuring. Save. Exit. Activate RoB. Load up your game

I would also recommend using the merge function in zEdit for the mods you want to merge. ESPs flagged as ESLs can still be merged.

Never seen that message screen before...unless its moonlight tales. Perhaps post a screenshot of the message? Load order actually isnt a bad idea. I may not know what mod is causing the issue but might be able to narrow it down to 2 or 3

Start here.

Your ini files determine how far grass is loaded. Most grass mods come with an ini file that does the tweaks for you. However whatever you set it to there will always be distant views without grass it's just an engine limitation

Load order of those two plugins probably doesn't matter too much. Eckstraa.esp is only there to ensure the BSA is loaded. In fact you can delete that ESP if you extract the BSA to save a space in your load order. It's worth noting that the author of the Rigmor mods doesn't recommend starting a new game with both Rigmor of Bruma and Rigmor of Cyrodiil activated. I believe they advise to activate ROC once you have completed ROB. It's been a while since I checked that (and I don't use the mods) so that advice may have changed since. Worth checking though

Perhaps I'm misunderstanding you but it sounds like you're talking about conflict resolution. That would be a separate distinct process from merging plugins. I would resolve any conflicts before you merge the plugins if needed. But maybe I've misunderstood you

No that's not what we're referring to here. We are referring to merging ESP plugins with a program called Merge Plugins. The merge plugin facility in xEdit is something different and not a process I've seen recommended on Special Edition What I'm recommending is that you should finish merging your plugins before you start a new game. In theory there may not be an issue doing it on an existing save but I see no reason to take the risk

True but you only need to clean the master files again. With the auto clean process its quick and easy

You said: To be clear, you will get a warning but everything is actually there. So you have merged plugins and then loaded a save where they weren't previously merged? That isn't a process I would recommend. I'd encourage you both to watch the YouTube merge plugins tutorial by Gamerpoets.

Theres no obvious issues with your load order or mods. I would recommend making a bash patch. Plenty of guides around just Google it. I'm not sure about creating and using a bash patch on an existing save though. Could mess up your save (although your save sounds kinda messed up anyway)

Yeah what the above poster says. Also Rigmor of bruma practically requires a light load order. You should also check the Rigmor mod pages as I'm not sure you should have both mods activated at the same time. I've not played them so you'll need to check this.

Do you have a graphics card?

You dont have 16GB VRAM I suspect you are using legendary mods on special edition. Try using special edition versions