I couldn't agree more! having wondows ink unchecked is the only way to navigate around the rest of a computer without serious lag or unworkable conditions completely...I've never noticed any issue in strokes with windows ink unchecked and to be honest I have the gut feeling the difference is so microscopic it exists only on a spec database somewhere and isn't something anyone has every visually noticed.
I'm going back to CC without any hesitation until this issue is sorted.