Purely from a gameplay standpoint, limit the time you spend in areas where dozens of players are rendering custom cars and clothing simultaneously, as no amount of optimization can fully overcome poorly optimized server assets.
Over time, downloading custom assets from various servers bloats your FiveM cache folder. Deleting the cache folder (except for the game subfolder) forces the game to redownload fresh files and often fixes random frame drops. Purely from a gameplay standpoint, limit the time
Change your Windows power plan to High Performance to ensure your CPU does not throttle its speed to save energy. Change your Windows power plan to High Performance
Ensure your RAM is running at its advertised speed by enabling the XMP (Intel) or DOCP (AMD) profile in your computer's BIOS. FiveM is highly sensitive to memory speeds. FiveM Specific Adjustments FiveM Specific Adjustments FiveM has its own quirks
FiveM has its own quirks and cache system that can degrade performance over time if not properly maintained.