Despite the "Vanilla" name, it is extremely demanding. You generally need a modern dedicated GPU (Nvidia RTX 20-series or AMD RX 6000-series and above) to maintain 60 FPS [1, 2].
The project for Minecraft Java Edition is a sophisticated shader and resource pack combination designed to bring real-time path-traced lighting to the game without requiring the "Bedrock RTX" hardware layer. Key Features and Performance Vanilla Raytracing for Java! (Support 3D Models)
Offers a visual overhaul comparable to high-end shaders like SEUS PTGI or Continuum RT. Despite the "Vanilla" name, it is extremely demanding
The support for volumetric fog and light shafts (god rays) significantly enhances the "mood" of vanilla Minecraft. Despite the "Vanilla" name
Requires Iris Shaders (recommended for performance) or Optifine .
Often includes extensive menus to tweak bounce counts, denoising strength, and resolution scaling. Cons: