But the technical problems you'll really notice are the ones that affect how the game plays, not just how it looks and sounds. The biggest problem is that the game is prone to freezing. I experienced this at load screens where everything would simply go black, as well as during actual gameplay when the game would freeze up, forcing a restart. And though the game has an auto-save feature, it only saves when you enter buildings or certain rooms, so you can't rely on it. You'll need to save and save often, otherwise progress will be lost. And there's nothing more frustrating than that.
Well, maybe there is. On three separate occasions, while walking over rocks, I found myself stuck inside them, unable to escape. Like the freezing, this forces you to restart the game, going back to the last save. In addition to these problems, New Vegas also has some incredibly long load times. Sometimes entering a new area will only require a few seconds of loading, while other times it can take upwards of a minute. You never quite know just how long it will take to get into the next room.