I really reccomend you just follow the Viva New Vegas guide I linked. If you only follow it through the first few pages and stop before the "VNV Extended" section begins, there's no gameplay tweaks, only bug and crash fixes. The only texture mods in that section of the guide are for landscape textures (mainly distant landscape textures) to reduce visible repetition.

It's the most up to date guide I've found concerning crash fixes, performance fixes, and general stability fixes. There's a bunch of old "fixes" that actually cause more problems on modern systems, and you don't need to worry about sorting through any of that yourself if you follow the guide.