More sample gameplay from GTA IV PC at maximum possible settings. Gameplay in this video includes both high speed driving through the middle of the city, as well as a helicopter flyover over most of the map.
1920x1200, All maximum, VSync Off. Settings are shown at the start of the video for confirmation.
Using version 22.214.171.124 of GTA IV.
FRAPS has reduced the FPS by 20-50% at times, but even with FRAPS running the gameplay is almost totally stutter free, even when flying over the city or driving rapidly through the middle of town with lots of detail for almost 10 minutes. The only tweaks or changes to the game itself are the use of the XLiveless mod and using the -norestrictions command line switch. The main reason for the smoothness is a combination of good hardware and system optimization via the TweakGuides Tweaking Companion ( www.tweakguides.com/TGTC.html ). Good hardware alone is not sufficient to achieve this level of smoothness.