100% Preview slow

Hi everyone,

I sometimes have to flip through hundreds of Images on 100% quickly and make a selection.
I realized that there is always 1 sec unsharp before the picture gets calculated.
So the picture is always calculated on that Moment, not before?

Is there any workaround to precalculate 100% Previews?
I work on a M2 Max, everything maxed out.

Best 
Ingo