Video source: https://youtu.be/K6ACzu18rms
Here are the Top 5 Best Performance Mods for Fabric & Forge.
Fabric
First of all get Mod Menu so you can configure some of the mods. Grab it Here
If OptiFabric and OptiFine are not working well, then try the below mods:
(Note some of the below mods may conflict with OptiFine)
(Note some of the below mods may conflict with OptiFine)
(Optional) FPS Reducer - Here (enable the hud option to show fps counter)
Forge
OptiFine - Here (you can simply drop the mod file in the mods folder and it should work)
If OptiFine doesnt give good performance then try the below mods.
(Note some of the below mods may conflict with OptiFine)
(Note some of the below mods may conflict with OptiFine)
FerriteCore - Here
Better Biome Blend - Here
Clumps - Here
Boosted FPS Modpack
I would recommend you get the Boosted FPS modpack for the ultimate performance pack!
Fabric 1.16.5 - Here
Fabric 1.17.1 - Here
Fabric 1.18.2 - Here
Forge 1.12.2 - Here
Forge 1.18.2 - Here