How are you guys uploading to SKetchfab and have the displacement working? When I use the export option, it doesn't export height and if I do bring in height, the model needs to be subdivided but I see tons of people have their displacement working in Sketchfab. Any help would be appreciated.
I am running into the same issue. I exported my displacement maps manually, and I can get them hooked up in Sketchfab, but the displacement conveyed on the maps is completely different than what I get from previewing and rendering my textures in Substance Painter. I did a -ton- of non-destructive hand painting with fill layers and masks, largely because I'm not very confident and painted one area at a time, and the exported maps are largely white instead of the masses of gradients they should be. My little dude wasn't much, but I would have liked to have shared him, and his texturing completely depends upon the displacement.
I took screenshots of both SP and Sketchfab, but I'm uncertain if it's appropriate to share them here.