What happened?

Framerate when looking away from sky light source is significantly lower then when it's on screen/nearly on screen. I've tested with only Iris+sodium, with both Sildur's and Complementary shaders, and in both 1.18 and 1.17. In one scene it went from 130 to 77fps, and in another lower resolution test it began at 243 and was lowered to 139 with the sun behind the player. I'm aware this might just be how Iris or shadow frustrum culling works, I don't know that much about it.

Screenshots

Relevant log output

No response

Minecraft Version

1.18.2

Iris Version

iris-mc1.18.2-1.2.4-build.38.jar

Sodium Version

sodium-fabric-mc1.18.2-0.4.1+build.15.jar

Operating System

Windows 10

What is your GPU?

Nvidia GeForce RTX 3080

Java Version

Java 17

Additional context

No response

This is because of how shadow culling works, less shadows are in the players view when looking at the sun then when away from the sun.