Yeah I should consider cutting my UV shell into smaller chucks. As for ID map (color selection), maybe I am not baking them right? They are always a bit blurry between sections, I have to mess with the sliders to try to fill a section properly.
Is it me or is Substance Painter polygon fill painting isn't quite responsive? I zoom all the way to the polygon and click on the dead centre of a triangle, it often doesn't register, or worse, paint a triangle on other side of the mesh. If you paint by mouse drag (draws a rectangle on screen) and it follows the Maya rule…