Hi,
just find another incompatibility with the mod lifts. (https://www.curseforge.com/minecraft/mc-mods/lifts)
If u place the lift screen everything gets blurry.

After setting timedoorFancy to False, it works without shaders.
With enabeld shaders it looks not very good, but the blurry effect is gone.

The blurry effect is very hard to make work with other mods, so by default it turns itself off if we find a mod that breaks it. I'll add lifts to the incompatible mods list