High-resolution textures, leaving the world looking like basic shapes and color blocks. Large portions of the map.
To run a standard version of GTA V on Windows, your PC should meet these minimum specifications from System Requirements Lab : Minimum Requirement Windows 7 64-Bit Service Pack 1 or better CPU gta-5-for-pc-microsoft-win-setup-exe-highly-compressed
If you are looking for a compressed version because your PC is struggling with performance, consider these optimizations instead of downloading unofficial files: gta-5-for-pc-microsoft-win-setup-exe-highly-compressed