Right-click your FiveM shortcut, select "Open File Location," and then open the FiveM Application Data folder (the one with the snail icon).
Ultimate Guide to the FiveM Optimized Citizen FPS Boost Pack
Locate the existing citizen folder. It is recommended to back it up first. Then, delete it and paste the new citizen folder from your downloaded pack into the directory.
Helps systems with limited VRAM (like 4GB or 8GB RAM setups) load textures faster, preventing the "invisible road" glitch.