preset in Library progressive slow down

[I Simonius]

I just applied a preset to a collection with 191 images in it, to start the preset was applied rapidly to the fist few rows then more hesitatntly to the next rows then finally taking twi seconds ofr each image

Is that normal behaviour for it?

 

[Kiwigeoff]

I just applied a preset to a collection with 191 images in it, to start the preset was applied rapidly to the fist few rows then more hesitatntly to the next rows then finally taking twi seconds ofr each image

Is that normal behaviour for it?

What type of preset ??

 

[I Simonius]

What type of preset ??

Desaturate HSL only