Embos FX working over height/depth image

Having sbsar as filter over smart object is cool   but is not good enough . We need something like live filters in Affinity Photo.  I often use Photoshop to edite and composite  height maps  and  to see what you are doing you need some  real time preview .   A normal map or just live  bump lighting .   The current embos fx  doesn't help much with that .     Please Adobe make embos FX working over heigh image .    Curently it works only in 32 bit mode  and looks  not very good .  Blurry and stepped.     Let's fix it that way it would work not over layer alpha but rather intensity.