Getting this sort of "screen smear" when using Iris + Sodium + Latest version of DH + In dev version of Bliss shader. All default settings on all mods.

in DH config, at least for me, anything above medium quality preset fixes this for me. Minimum/Low causes the smearing

in DH config, at least for me, anything above medium quality preset fixes this for me. Minimum/Low causes the smearing

this does not work for me

this seems to be an issue with DH, as it happens with Proton shaders too

correct, DH/Iris issue completely unrelated to shaders.

this is due to a compatibility issue with Alex's Caves see this for solution