Hi, I’ve just been using Photoshop for about 3 days solid, editing, comping and retouching 16 bit 45 Mpx Nikon files, which because of them being 16 bit and all the layers were about 6-900 Mb in size, and the performance was awesome! No slow down, no lag: brushes, clone stamp, healing brush, zoom in/out, filters etc all working instantly. Now I know they’re not the most arduous tasks in the world, but I totally forgot that I was working in 16 bit as there usually is a slow down or choppiness in viewing the files on my old system (nMP & last intel MacMini). Current system: Ultra base with 4tb NVMe drive for files. I imagine you’d love the Mac Studio for PS work!
Hope that helps