Vanilla Optimizer+ is a good way for improves your fps, you can play in a singleplayer world, in a server or just a casual game with your friends with good fps.

the modpack aims for a smooth gameplay for your experience in a Minecraft World or Server

The modpack includes Resourcepacks for a Better Vanilla Experince Shaders if you want test the fps with a low shaders or just play with the shaders if you want

You want adds mods, resourcepacks or shaders? You can do it, if you want play with a medieval mods or structures mods, Realistic or Cartoon Resourcepacks, better Shaders, you can do that if you want i do the modpack for a FPS BOOST with other mods.