Gta V how to Reduce Cpu Usage?

How do I Fix my CPU Usage on GTA 5?

antialiasing off, population density and variety way down, and distance scaling reduced should reduce load on the CPU. Also reduce shadow and particle quality. lower these settings, bump the resolution up a bit.

How do I Reduce CPU Usage in a Game?

Check GPU drivers.
Tweak in-game setting.
Patch affected games.
Disable third-party apps working in the background.
Disable all power-preserving modes in BIOS/UEFI.
Enable XMP in BIOS/UEFI.
Use 4 cores if possible and try overclocking.
Reinstall the game.

Does GTA Use a Lot of CPU?

Its more CPU intensive than GPU, really. Most GPUs, even GTX 200 series, can run GTA V fairly well. GTA V is harder on the CPU because of the large map thats constantly rendering as you explore, same reason why it runs smoother on SSDs than HDDs.