Very good to know this, as it pretty much confirms that my crashes were likely due to Vivid Weathers.
My best guess is that, because Vivid Weathers affects pretty much everything about the game and is not area-specific, it may just be too much of a load on the Switch. I think Skyrim vanilla is already hard on the Switch by itself, so maybe Vivid Weathers just puts things over the top.
I’ve updated my original post and put Vivid Weathers under the “Causes issues” category.
To confirm it for sure, I read your Vivid Weathers crash report on the O.P. and you state you had problems in Whiterun; I had it there, in Winterhold, when entering some random buildings, and Nightingale Hall. I wonder if some of these other extreme texture overhauls are going to cause issues as well? I'm looking into some of the more undocumented INI file directives for things related to memory. Knowing absolutely nothing about the way the internals of the software work, there are different ways to access these mods/textures without fully loading them into memory and instead seek them in the file, which may be slow a bit from SD CARD but if it's supported somewhere in Skyrim it may help with memory load. I only mention this because I see the INI settings relating to memory cache/pre-loads and whatnot, and others that have found some other memory related stuff, threading, etc. (who knows how this translates to the Switch though)
Thanks for all your testing, I'm testing as well. You may want to alter the OP to include things about load order. For instance I was having issue with the 'BBB" (breast butt bounce etc), UNP Female, etc. mods that required XP32 Max Skeleton. The breasts were stretched out like Mario's nose in a 7 year old's hands in Mario 64 splash screen, the butt/thighs/hips were mutilated, etc. It turns out that XP32 MS needed to be loaded AFTER all of the BBB mods, the breathing mod, the beautiful eyes mod, the female body overhaul, 'Schlongs of Skyrim', etc. I still am not familiar with the load order rules but I was told it should be the more complex things to the least, but this can't be entirely right (and, that isn't accounting for the type of mod).
Anyway, test on everyone. Maybe we can each have an authoritative post where we put the results of our tests building on the main, and you incorporate that in, load order details included.
Regards
dataslanger