Given that the Fabric mod loader supports some performance-boosting mods like Sodium, players are recommended to use this mod loader when playing Distant Horizons with shaders.

For Iris Shaders (for modern visuals and fabric users), go to the Iris Shaders page— https://irisshaders.net, download the Fabric version for 1.21.5, and then install it using the Fabric mod loader.

For Iris Shaders (for modern visuals and fabric users), go to the Iris Shaders page— https://irisshaders.net, download the Fabric version for 1.21.5, and then install it using the Fabric mod loader.

One such shader pack is called Photon shaders, which offers some of the most realistic reflection, cloud textures, and lighting effects. Here is a guide on how to download it for Minecraft.