Optimizes how the game uses memory, drastically reducing stutter.
Having all DLCs and the latest patches (1.4.0.525) pre-baked into the installer prevents version mismatching.
If you have the budget, the Fallout: New Vegas Ultimate Edition frequently goes on sale for under $5 on Steam and GOG. The GOG version, in particular, is widely considered "better" because it comes pre-patched to use 4GB of RAM, saving you a manual modding step.
For those with slow internet, a smaller download is the difference between playing today or next week. Making it "Better": The Essential Post-Install Steps
Old Bethesda games have a physics engine tied to framerate. If you are playing on a high-refresh-rate monitor, the game will feel "choppy" even at 100 FPS. Use to allow for smooth 60+ FPS gameplay without the game's physics breaking. 3. Modern Visuals (Without Losing the Vibe) If you want the game to look better than the 2010 original:
Fixes the dreaded "New Vegas has stopped working" errors.