1.12.2 is the only version that optifine is broken in for me. Optifine_1.12.2_HD_U_F5, Sildurs Vibrant Shaders v.1.22 Lite. I have tried this with every shader pack and each one is affected by
Optifine HD Mod for Minecraft 1.18.2/1.17.1/1.16.5/1.15.2/1.14.4 | MinecraftSix
How to Install Forge WITH Optifine for Minecraft 1.12+! - YouTube
How To Download & Install Shaders in Minecraft 1.12.2 - YouTube
How to Install Optifine HD 1.12.2 + Shaders + Textures - Mapping and Modding Tutorials - Mapping and Modding: Java Edition - Minecraft Forum - Minecraft Forum
How to install Optifine Mod - Minecraft 1.12.2+ - YouTube
Download Minecraft Optifine 1.12.2, 1.14.4, 1.16.5 - Install - General Discussion - General Minecraft - Minecraft CurseForge
Optifine 1.19 / 1.18 & older - Download and How to Install
OptiFine HD 1.12.2 for Minecraft
How to Boost Your FPS in Minecraft 1.12.2
Optifine 1.12.2 HD U G5 Free Download and Review 2022
OptiFine HD - FPS Booster Mod For MC 1.19.2, 1.18.2, 1.12.2 | PC Java Mods
OptiFine mod 1.14.4/1.13.2/1.12.2 - optimization mod, FPS booster
How To Install Optifine - GET MORE FPS! | Minecraft 1.12.2 - 1.13.2 - YouTube
Not Enough Items Mod for Minecraft 1.12.2/1.11.2/1.10.2 | Shaders Mods
How to Install Optifine HD 1.12.2 + Shaders + Textures - Mapping and Modding Tutorials - Mapping and Modding: Java Edition - Minecraft Forum - Minecraft Forum
How to Install Optifine HD 1.12.2 + Shaders + Textures - Mapping and Modding Tutorials - Mapping and Modding: Java Edition - Minecraft Forum - Minecraft Forum
How To Run Minecraft 1.12.2 Fast W/ No Lag! (How To Increase FPS in Minecraft 1.12.2!) - YouTube