Whenever I load any world, the game crashes after the loading progress reaches 100%, before any gameplay is shown. The crash results in the Exit Code "-1073740791" with the message "This crash may be caused by an out-of-date graphics driver or conflicts with screen recording software. Please ensure your graphics driver is up-to-date and disable or uninstall any screen recording software in use."

I have no screen recording software and my drivers are up to date, this crash only occurs with this mod installed.

Sorry I forgot to clarify the version.

fzzy_config-0.6.0+1.21.3 for fabric, loaded on 1.21.4

Java error messages don't really tell us much; I'll need a full log to diagnose anything. Also, Fzzy Config is a library, is there a mod you just added that needs it as a dependency?

I installed Fzzy Config for the mod Subtle Effects, but the crash occurs without that being installed as well.
And here is the crash log

It looks like the version of "Fabric Permissions API" I shipped is too out of date for 1.21.4. Try installing the latest 0.3.3 manually and see if that resolves it. https://modrinth.com/mod/fabric-permissions-api/version/0.3.3

Yep, that fixed it!

Fixed with release 0.6.1+