Its also safe to remove if you dont want to keep the mod as texture and mesh replacers are the only thing not stored in your save by the game and are loaded each time that you run the game. Especially if you want proper male characters wandering around. Fully customizable body sizes with better textures. Combining this mod with a better body mod would make Skyrim feel a hundred time more. It's a successor to the infamous Schlongs of Skyrim. That mod comes with brand new textures for all of the races so that should work fine, you don't have to keep it if you dont want, its just a test to make sure theres not another mod or problem interfearing with that texture. If you're into NSFW male mods then Shape Atlas For Men is the best there is. This may seem like an odd way to test it but download Total Character Makeover from the nexus, install it and run the game starting a new game for a fresh test.

It was mentioned that it could be that you are running out of vram, but its VERY unusual for it to only affect one texture and almost impossible for it to affect the same texture once you downgrade it to the point where there are bigger textures in the game. Theres litterally no reason to have a missing texture on your body with no mods because the texture is compiled into the Skyrim - Textures.bsa which litterally means that if the bsa is there, and has been verified, the texture is there.

Male body mod skyrim