High player counts require your client to constantly render and update entities nearby.

fx_version 'cerulean' game 'gta5' name 'FPS Boost Pack - Extra Quality' client_scripts 'client/shader_precomp.lua', 'client/streaming_tuner.lua', 'client/gc_controller.lua'

You do not have to sacrifice graphics for performance. This comprehensive guide explains how to select, install, and configure a high-quality FiveM FPS boost pack that maintains extra visual quality while delivering smooth gameplay. Why Custom FiveM Servers Cause Lag

Accumulated server cache slows down asset loading times and induces stuttering. Go to your FiveM Application Data folder. Open the data folder. Delete all folders the game-storage folder. Conclusion

Unlike vanilla GTA V, FiveM introduces unique bottlenecks:

It removes unnecessary high-resolution textures (like distant tree leaves or street trash) that your GPU processes but you never notice, while keeping player models, cars, and immediate surroundings looking sharp.