Set Shadow Quality to "Off" or "Low." Shadows are calculated via the CPU, and on a 32-bit system, this will kill your frame rate.
When the game exceeds the 3GB limit, it forces the system to use "virtual memory" on the hard drive, leading to significant stuttering. Grand Theft Auto Iv Download Pc Windows 7 32-bit
You acquire the Complete Edition (which combines GTA IV and its expansions) from a trusted digital archive, specifically looking for a version that doesn't force a mandatory modern Rockstar Launcher update. Step 2: Installation and Compatibility Magic Set Shadow Quality to "Off" or "Low