Help me with shaders, please(

[fading linden]

When shaders enabled - ripples appear. How can I disable this in shaders?
Left - Without Shaders | Right - With Shaders

[gloomy tundra]

I think those might just be part of the shader pack itself, probably a bug

[latent hearth]

Is it a vanilla pack? since then it's probably not a bug but a side effect of trying to store the depth data for every pixel