Using Substance and your bake taking really long (especially AO, Thickness, or Normal)? You can re-import your high poly .FBX file into Zbrush with the FBX plugin, run Decimate on your high poly and re-export as an .FBX for faster bakes. I've found even just running Decimate twice on a dense model can create an 80% reduction in bake times. Try it out! Let me know if it helps you!