I removed every single mod until i could find the one causing the problem and hydrogen seems to be incompatible. It will straight up not launch without error message or anything when the mod is installed.

will be fixed in the next release for 1.17.1.

Next version?

You can use ferrite core, it has similar performance to hydrogen and it won't crash with this mod.

For results you should use both FerriteCore and Hydrogen says FC Dev, (which i already do).

Cannot take out a mod out of my optimization stack for this. He already made it compatible though, check the commits 691bf58.
Not sure why he hasn't publicly released the updated version.

I'm just going to compile the latest commit.

seems like it will be fixed in Hydrogen 0.3
but I will try to fix it on my side asap.

fixed in next version

seems like this is back smhow(in 1.17 version)...