I am using Fabric for 1.16.5. Everything in this GREAT mod is working as far as aI tested except for the DisableInventoryEffectRendering. It doesn't remove effects from my Inventory GUI. Since I am using a mod to display my effects, this is pretty annoying.
I tried using a toggle button but it didn't work.

I uploaded a new build with a fix here for now: https://masa.dy.fi/mcmods/client_mods/?mcver=1.16.4

Nice! Works now!