FastPBR v1.1 is a release file of the Minecraft shader FastPBR Shader, made for Minecraft 1.19.3, 1.19.4, 1.18.2, 1.20.1, 1.20. It was published on June 13, 2023 and is 1.1 MB in size. For the full description, screenshots and every other version, visit the FastPBR Shader shader page.
How to install: Put the .zip into .minecraft/shaderpacks (do not extract it) and select it under Options → Video Settings → Shader Packs. Needs Iris or OptiFine.