I was looking through Spark Profiler and found a higher than usual lag coming from EldritchEndCompatMethods.generateVoidcloakStacks() in EldritchEndCompatMethods.java

1.80% of the 1.83% Simply Swords uses is on that method

I'm admittedly not good at these "optimization" things, but it seems like that method is running every tick no matter what and is grabbing the config every time.