Nostalgia/Kappa/etc. shader's TAA causes significant flickering when viewing smooth snow layers

[Creare-d-arte]

Describe the bug In scenes, like that shown in the attached screenshot, the shader's TAA causes significant flickering.

Checkout this link for reference: https://forum.unity.com/threads/taa-medium-long-distance-issue-flickering.1222215/

To Reproduce Steps to reproduce the behavior:

1. Create a landscape using snow layers.
2. Turn on/enable Nostalgia, Kappa, etc. shaders.
3. View visible flickering.

Expected behavior As visual quality is significantly impaired when flickering is present; there should be little to no flickering on screen.

Screenshots https://imgur.com/a/65M8PVV

Environment (please complete the following information): Iris Version: 1.6.2 for 1.19.2 Minecraft Version: 1.19.2 Shaderpack Version: Any version Graphics Card and Driver Version: Nvidia RTX 3080, latest driver Operating System: Win11 CPU: AMD Ryzen 5800 Amount of System Memory (total and assigned to Java): 16GB

Additional context There appear to be solutions for this issue. I hope that such solutions are feasible in Minecraft.

[rre36]

TAA flickering always happens and may or may not improve with future updates, especially when its a worst case scenario like in your scene.