Heavy artifacting started appearing

[Oreeeee]

What happened?

On some shaders, I started getting artifacting. With Complementary Shaders 4.5 I get them only underwater after a second, it looks like two triangles with solid colors. With SEUS PTGI HRR 3 it's constant, there are two triangles too, but you can make out the image.

Screenshots

Log output

No response

Minecraft Version

1.21

Iris Version

Iris 1.7.3+mc1.21

Operating System

Arch Linux, 6.6.39-1-lts Kernel

What is your GPU?

Gigabyte RX 580 8 GB

Additional context

It used to work like a week ago.