I just posted
I am writing this to aware you of what Microsoft have done to your game, for almost everyone.
Before the latest Windows Live patch, I could run the game fine with a stable 30-40 fps with average graphic settings, which I was pleased with. On April 21 I was asked to download the latest Windows Live update and install it in order to proceed playing the game, but what I didn't know what it was going to do to my game.
Since I installed the patch I have gotten an average of 25 fps with very constant stuttering occurring every 3-5 seconds. This is making GTA IV almost unbearable to play in single player, at any setting. This stuttering doesn't happen at all during benchmark tests or multiplayer.
Many have chosen to reinstall GTA IV and use a fan made "Xliveless" patch in order to avoid the update. So it seems having a good quality single player with no multiplayer, or multiplayer with an unplayable single player is the choice right now for GTA IV players.
Here is a topic in a well known forum showing a quantity of people experiencing this issue, its not just a "1% of players problem" situation here, almost everyone has it.http://www.gtaforums...pic=408280&st=0
Thanks in advance Rockstar Games. Keep up your fine work with all your games!