Having a really bad lag issue with New Vegas to the point where it's not tolerable.
Even on medium settings, it will lag but the wierd thing is that I can play Fallout 3 on Ultra settings with a smooth 60fps. Anything I can do to fix this?

I've updated my video card and all that shite. 
 
Found a fix:
  http://newvegasnexus.com/downloads/file.php?id=34778

maybe dont use OnLive xD, No Just kidding maybe try reinstalling i had it with Civ5 and after Renstalling it worked kinda better but still not great maybe you are running too much stuff in the BG?

From what I've heard, there should be a patch out later today for memory leaks.

A memory leak fix only fixes lag after a short or long periode of gameplay time. (Because of the memory is unable to process all the data to the rest of the system) Is that your problem?

@naughtydog:
Then i'm not sure. I see that you mentioned drivers for your videocard, but have you also tried to update Direct X? Other than that i recommend for you to wait later to see if the memory leak fix will fix something.

I wouldn't say mine is bad but there's the occassional jitteryness, especially in combat. Fallout 3 had no problems. 

There is some weird bug where the game stutters whenever NPCs are on screen, seems pretty common too.

I've been getting lag on the 360. Its pretty bad. Game even froze once. Same for my friend, too.

" Been to various forums, and it seems like this is a very common problem. Makes you wonder how a development team reacts when they find out they've sold a broken product to a good chunk of their customers. "

Yep, top of the line computer, same problem. I refuse to play the game in this state. This shit is inexcusable. Ironically, I was one of the people who didn't "get" everyone's complaints about Fallout 3. That I ran perfectly.

New Vegas does not play well with Fermi... You are warned!
 
Also, companion pathfinding causes megalo memory leaks (this according to Beth support!)... If you are crashing repeatedly in a particular section and you're travelling with companions, ditch them and try it again. courtesy of Tom Chick at Fidgit

stop the presses!! obsidian made a game on a bethesda engine and there are bugs?!?! why anyone would pay $60 for a game that everyone knew was going to be this buggy baffles me to no end. There should be a moratorium on these forums for people whining about bugs in an Obsidian/Bethesda Fallout game. 

The only problem I had was when people fell through map and I had to open command console and enter "tcl" to remove collision so I could fly through and kill 
 
Other than that everything is perfect for me

Guys, great news! I found a fix that worked great for me
 http://newvegasnexus.com/downloads/file.php?id=34778
I suppose it's temporary until they actually fix it themselves, but it works GREAT