Issues with some shaders (Nostalgia, Simplicissimus)

There is a distortion at the arm, why?

https://www.youtube.com/watch?v=ti4_9CT8B74

You’re saying this as I did it on purpose... 😅

I’ve been wondering this for years myself, but I don’t know. It’s an issue with the shader pack and not my mod.

You can try turning on simpler models in the Ctrl + 0 > Emoticons, but beside that, I can’t help. Feel free to find the shader’s dev and submit this bug to them.

I sent this issue already to the shaderpack developer. He / she said "it's a mod bug".

But thx for the answer

Ah yes, instead of looking into it, they just say “it’s a mod bug.” 😔

From my past experiments, this issue happens due TAA feature of the shader packs.

No change if I turn TAA off

So, how can I fix it? Can I fix it?