TurntLogic

The NPCs Travel comments mention the Rusty Face Fix causing crashes if you've enabled streaming mode. If you have it installed, you could try disabling that setting in the Rustyfacefix.ini. If that doesn't work, you may want to look at your mesh-related mods. You mentioned invisible NPCs before and your crash logs are listing a mesh crash. You can also disable A Bit Prettier Raider Faces and see if that stops the crashing. I hope it helps!

It seems to be a common issue. You can try disabling FCX Mode in the CLASSIC Settings.yaml, or try the newer GitHub release here. Are those vanilla enemies? I don't think I've heard of them before.

Have you tried running your crash logs through a crash log reader?

Try disabling weapon debris in the launcher settings and see if that fixes the issue.

Blown-up or disassembled weapons are usually caused by a mod conflict. This could be a patch, addon, animation, framework, or simply the base mod is broken. You could try putting your load order in FO4Edit and see what mods are conflicting, and create a patch or adjust your load order appropriately. You could also try a binary search and see if you can find the culprit mod(s) that way. You can try the Rusty Face Fix. If it doesn't work, you'll have to look at your face textures and ensure they're all at the same resolution (1K, 2K, etc...).

Thats awsome, Im glad it's working!

Maybe the author of that cart mod made a mistake with the Base Object Swapper config file. But, that's just speculation on my part.

It's been said that too many plugins can cause UI issues. While I haven't experienced this myself, you might want to consider it if installing a cart replacer is causing UI problems. You should also look into FNV Mod Limit Fix if you don't have it already. You could also disable your HUD/UI mods and see if the issue persists, and if all else fails try a binary search of your modlist to find the culprit.

Are you running any UI/HUD mods?

It's an engine limitation, when you have too many dynamic lights like torches, it causes flickering issues and uneven lighting. You can get around this by using ENB or Light Limit Fix for Community Shaders, but don't use both. You can also look at mods like Torch Remover or Guard Torch Remover, which removes torches from NPCs reducing the number of dynamic lights.

One of your mods might be reverting your FOV with an INI file or a script.

Is that all your mods? In that case, the quickest solution would probably be a binary search. Remove some of your mods, create a test character, and see if you still crash at Sekunda's Kiss.

Glad you found the issue!

Is this the mod your looking for?

Do you mind sharing your mod list & load order, as well as some details on the crashes? Where do they happen, when do they happen, etc...

Possibly a Leveled List issue. This is usually caused by either circular leveled lists or leveled lists that are too large. You can identify circular leveled lists through XEdit. Select "Check for Circular Leveled List" and fix any issues that XEdit identifies. When it comes to overly large leveled lists, you have a couple of things to try: You can revert the list with a script. Delete the change form of the list with the Resaver tool. Remove the offending mod and revert to a save before the issue started. You can check out this Reddit post for more information, and use this tool to read your crash logs.

If you want to try changing game settings, you'll probably want to get BethINI. It provides a user interface for editing your INI files, making it much easier than manually changing stuff.

Make sure you've launched skyrim.exe at least once so the game can configure itself. After that, try launching SKSE. If the game still crashes you'll probably need to do a binary search of your modlist. I don't mean the most up-to-date version of a mod, but the correct version that coincides with your Skyrim install. Plenty of mods have separate versions for AE and SE, specifically SKSE-based mods. Also, newer mods may use file format version 1.71, which will only work with game version 1.6.1130+. Using these files on an older version will cause a crash and require Backported Extended ESL Support to function. Hope it helps!

The Nexus Wiki has a dedicated page for creating new races.

That might be a lighting/weather issue, but you could give Paraphernalia - Snow Colour Fixes a try.

Even in the vanilla game, Falkreath is a known trouble spot for FPS, and mods like Nature of the Wildlands only worsen the issue. You can try eFPS - Exterior FPS boost but patching this mod can be a lot of work. You can also lower your shadow distance and shadow resolution, which should give you a few frames back.

Have you tried a binary search?

Thats great, glad its fixed!

Make sure you're not missing any master files or using the wrong version of a mod. You can also try running your crash logs through Crash Log Decoder or Crash Log Analyzer.

It could be an Out of Memory crash. If you haven't already, install the FNV 4GB Patcher. You'll probably also want to install the Tick Fix and Heap Replacer. You can consult this guide for installation instructions.