430.64 installed and worked fine. I found 430.39 was not a problem after unchecking, then re-checking GSync.
430.64 I found I can cause to stutter using Alt-Tab to Windows, then back to Ashes. No issue with Alt-Tab if I leave G-Sync unchecked.
Mostly a curiosity at this point, except knowing I don't dare Alt-Tab in game because I didn't pony up for the G-Sync video card and monitor to leave it off.