Many players of Minecraft surely have heard about shader mods. I use forge for 1.12 with Impact, Codechickenlib, jei and nei so I would have to download optifine but here is my issue, opti seems to work on vanilla 1.16 but on 1.12 it crashes on the title.
I am looking for a shader pack for Minecraft 1.12.2 and 1.16.4, I know those are very different but I play multiplayer on 1.12 and survival on 1.16.