Fullscreen (provides a +5–10 FPS boost over windowed).
Drop to 1280x720 or 1600x900 if 1080p is stuttering. Fivem Low End Pc FPS Boost Pack and Fix Lag
Surprisingly, setting this to "High" can sometimes help by forcing the game to use the GPU rather than the CPU. 🛠️ Windows & System Fixes Fullscreen (provides a +5–10 FPS boost over windowed)