Low FPS with the Create Mod (And Red Green textures when shaders are off)

[MasonIsEpic]

What happened?

When shaders are on (We use Complementary V4.3.3) and we are near anything related to the create mod the FPS drops dramatically from sitting at around 60-80 (On an ok Computer) to 5-20 (On the same computer). Sometimes we have to disable the shaders even to make the game playable.

Although when we disable the shaders, all the chests, Create stuff, and stuff that moves look green and red (Shown in Figure 1) When shaders are off our FPS goes back up to 60-150.

Here is a list of our mods (Fabric 1.18) animatica-0.5+1.18.2 architectury-4.11.89-fabric cem-0.7.1_S8_1.18 chipped-fabric-1.18.2-2.0.1 cloth-config-6.4.90-fabric create-fabric-0.5.0.i-944+1.18.2 ctm-fabric-1.0.0+1.18 Decorative+Blocks-fabric-1.18.2-2.1.1 entity_texture_features_forge_1.18.2-4.3.1 fabric-api-0.67.1+1.18.2 indium-1.0.6+mc1.18.2 iris-mc1.18.2-1.5.2 lithium-fabric-mc1.18.2-0.10.3 logical_zoom-0.0.14 modmenu-3.2.5 Oh_The_Biomes_You'll_Go-fabric-1.18.2-1.4.7 phosphor-fabric-mc1.18.x-0.8.1 replaymod-1.18.2-2.6.10 RoughlyEnoughItems-8.3.588 sodium-fabric-mc1.18.2-0.4.1+build.15 TerraBlender-fabric-1.18.2-1.2.0.126 Xaeros_Minimap_23.1.0_Fabric_1.18.2 XaerosWorldMap_1.28.9_Fabric_1.18.2

Screenshots

Figure 1 (Shaders Off)

Figure 1 (Shaders On)

Log output

No response

Minecraft Version

Minecraft Fabric 1.18.2

Iris Version

iris-mc1.18.2-1.5.2

Operating System

Windows 11

What is your GPU?

Mine is NVIDIA GeForce 1660, Others on server have different GPU with same problems.

Additional context

No response

[Timolino456]

This is expected and currently cannot be fixed, see #1414

[MasonIsEpic]

What about the red-green textures when the shaders are off? Is there anything we can do about that?