We take a look at the Top 10 Fabric Performance FPS Boost Mods on Minecraft Java 1.18.2. These can help improve your game's performance. View full article for more information.
Video source: https://youtu.be/Bb0ALCI3oYQ
First of all make sure you are running the latest version of Fabric with Fabric API.
You should then get Mod Menu so that you can configure some of the mods' settings. Grab it Here
Next start by getting the mods as shown in the above video link.
1. Sodium - Here
(recommended) Sodium Extra - Here (adds more sodium options similar to OptiFine)
(recommended) Reese's Sodium Options - Here (makes the layout more neater for Sodium and Sodium Extra)
2. Alternate Current - Here
3. Better Biome Blend - Here
4. Clumps - Here
5. Cull Leaves - Here
6. Dark Loading Screen - Here (remember to change the options to '0' for the Fade in and out options as shown in above video link)
7. Ksyxis - Here (if this mod is causing any in-game performance issues for you then disable it)
8. LazyDFU - Here
9. Lithium - Here
10. Starlight - Here
At this point your pack should be complete and you should be getting much better performance.
You can measure your FPS by either enabling the FPS counter in the Sodium Extra mod's settings or grab Fraps or MSI Afterburner apps from Here
You can swap Starlight with Phosphor if you want but as of now it is not yet updated...
You can also grab FerriteCore mod (not yet updated). Check its status Here (this should help with any RAM issues that you may be facing).
I would recommend you get the CurseForge client (view full tutorial Here) and then get the Boosted FPS modpack! it will have even more performance and QoL mods in the pack and cool loading screen.
Grab the Boosted FPS pack from Here (below screenshot from Boosted FPS loading screen)