Seus Ptgi Works With Iris Or Oculus [better] -

Oculus tends to be a few versions behind Iris. Always check the official GitHub for compatibility with your Minecraft version.

For players who need Forge-exclusive mods (like certain technical or magic packs), Oculus on CurseForge is the essential alternative. It works alongside Embeddium or Xenon (Forge ports of Sodium) to provide a similar performance leap. Recommended SEUS Versions for Modern Loaders seus ptgi works with iris or oculus

If this is a specific shader file you found (perhaps on a forum or a Discord), it represents a shift in the Minecraft graphics community: Oculus tends to be a few versions behind Iris