When I tried launching the game then, it would load normally, but then ctd as the main menu options were about to appear.
All in one go, unfortunately, so I couldn't check exactly where things went wrong. But one day, I went on to install the mods starting from the category "Plants & Stuff", right after the "Weather & Lighting" category, up until the end of the "Clothing is not optional" category. I started following the guide, and occasionally launching the game to see if it worked for a couple of days now, and everything was cheeky. I'm not 100% sure that I did everything exactly as was supposed, like clicking instead of whenever the guide didn't specify what to do. I was installing mods for Fallout New Vegas following exclusively the "Fear and Loathing" ( ) guide, and only installing mods from it and doing whatever the guide requested of me (I HAVEN'T INSTALLED ANYTHING REGARDING ENBoost OR ENBs IN ANYWAY).
I'm kinda new to modding at this scale, so bear with me if you would!