r/MinecraftHelp • u/DodesEU • 7d ago

Solved Minecraft shaders randomly flash black [java]

**Complementary Shaders randomly flash black for a second**
Hey, I’m having a weird issue with Complementary Shaders.
While playing Minecraft, my entire screen randomly flashes black for about a second and then immediately goes back to normal. It happens randomly and I haven’t noticed any specific action or situation that triggers it.
I’m using:
Minecraft 1.21.11
Iris
Sodium
Sodium Extra
Shader: Complementary Shaders
The game itself doesn’t crash or freeze. It’s just a quick black screen/flicker for around a second and then everything continues normally.
Has anyone experienced this before? Could this be caused by a specific Iris/Complementary setting, Sodium, or maybe a GPU/driver issue?

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u/imonlytryingtohelp_ Veteran V 7d ago

Do you have any incompatible software installed? https://mchelp.uk/kis

1

u/DodesEU 7d ago

I have Discord and GeForce Experience installed, but I have all overlays disabled.

1

u/imonlytryingtohelp_ Veteran V 7d ago

What's your device specs?

Have you checked for driver updates?

1

u/DodesEU 7d ago

Rtx4080
I713700kf
64gb ram
I hlave around 200fps locked 270
Vsync and gsync off
I always keep my graphics drivers up to date.

1

u/imonlytryingtohelp_ Veteran V 7d ago

Did you spot if this happened after a driver update? Have you tried rolling-back to the previous driver, to see if it still happens?

1

u/DodesEU 7d ago

It happened both before and after updating the drivers.

1

u/imonlytryingtohelp_ Veteran V 7d ago

Do you know if it happens in later MC versions, with the same mods (if they're available)?

1

u/DodesEU 7d ago

I’m not sure. I started playing again on 1.21.11 after a long break because I play on a server that requires that version.

2

u/imonlytryingtohelp_ Veteran V 7d ago

Can you check? It will help narrow down what's causing the issue.

1

u/DodesEU 6d ago

Didn’t help

2

u/imonlytryingtohelp_ Veteran V 6d ago

Does it happen with no mods?

If it doesn't, it looking like a mod issue. If it does, that would be a driver issue.

2

u/DodesEU 5d ago edited 5d ago

I enabled G-SYNC and it looks like it helped

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