There isnt any clear answer to why this happens, but what I see is a giant shadow under all players. Doesnt apply to entities, just players. Logs doesnt seem to suggest anything wrong.

It seems to be only Seus that has this issue, and I am on the latest IRISODIUM (1.2.0). This is only an issue when this mod is installed, maybe FPM could be the issue?

Yea I had to do some stuff to render the shadow in the correct location. It might be that this has an issue with SEUS for whatever reason. I'll look into it at a later point.

Could you add an image to the issue, and could it be the vanilla shadow?

It is specifically said 'Seus PTGI' shadows. It is a raytracing shader. Ill have the image for you in a couple of hours

Yea I know what Seus is, but with other shaders like Complementary on Iris there is no issue. So the only thing I could imagine is that it renders the vanilla shadow while the shader is active? Otherwise, I need more info.

Sorry I was so late, I was busy doing things irl.

Yea that looks like potentially the vanilla shadow, try updating iris and sodium. Could also be a flaw with Seus, since Complementary doesn't have this issue.