What's this noise when I use a resource pack?

When I enable this texture pack: https://www.planetminecraft.com/texture-pack/autumnpack-2-0/ Textures in the distance turn into a noisey mess! I think it may have something to do with Iris not mipmaping right(I'm on 4x) but I'm not fully sure. I'm on Fabric 1.20.2, this doesn't happen on Optifine. I used shaders for the screenshot I took but it looks the same either way. Also happens with VT varied grass.
Planet Minecraft
InnerToast's Autumnpack Minecraft Texture Pack
As the cozy and cool air rolls around and the fun harvest of nature comes to all, you can hear the crisp leaves' sound. It must now be Fall!...
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2 Replies
TheNukeLore
TheNukeLore13mo ago
In optifines do you have an option called “Anisotropic filtering” enabled? If so that heavily smooths distance textures. And if that is the case, unfortunately iris can not add said feature and other mods have tried but deemed it not possible
Slooshie
Slooshie13mo ago
Complementary is adding anisotropic filtering in the next update so distant shallow textures will be greatly improved
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