[AMD iGPU] Performance issue in version 1.3.1 for 1.21.1

[Tembeyo]

Hello good morning, when updating the mod to 1.3.1 1.21.1 I had a drop in fps, and well that's all.
(I've noticed that the menu performance is also greatly reduced.)
(I will use a server as an example to show the performance)

The first one shows how the previous version 1.3.0 is for 1.21.1: https://youtu.be/d_cosGXzPoE
(Sorry for the bad quality)

And well here is the new version 1.3.1 for 1.21.1: https://youtu.be/Qb2PQvxMdxU

To get back to the performance I had before, I have to enter F1 mode, as seen in the video.

Now about the LOG, I have no idea which one to send, please if you see this tell me which log I have to send exactly so I can help solve this error more easily.

Well, I hope I have been able to contribute something.
Have a nice day

[RaphiMC]

You can find the log in the logs folder in the .minecraft folder. Upload the latest.log file

[Tembeyo]

https://hst.sh/eqikixulot.sql this? @RaphiMC

[RaphiMC]

Yes, thanks. What CPU and GPU do you have?

Try disabling the fast_buffer_upload option in the ImmediatelyFast config and check if it improves performance again. Its located in .minecraft/config/immediatelyfast.json.

[Tembeyo]

the CPU is AMD A12-9800E-9800 and the GPU is AMD Radeon R7 Graphics, and now I'm going to try that configuration to see if it improves or remains the same.

[Tembeyo]

Hi, I'm back. Yes, disabling "fast_buffer_upload" improves performance.

[RaphiMC]

Can you run this version: https://upload.raphimc.net/file/eAUUchIjwiPxAx83/NmpL2pWgq7Ah3LgX/ImmediatelyFast-Fabric-1.3.2-SNAPSHOT%2B1.21.1.jar and upload the log again. I added code to log all the OpenGL features of the GPU, so I can check why its getting slowed down by the fast buffer upload optimization

[Tembeyo]

I set "fast_buffer_upload" back to true? @RaphiMC

[RaphiMC]

You can leave it false for now

[Tembeyo]

Here you have it: https://hst.sh/necikexuvi.yaml