[posixx]

I didnt have time to do all of them, bu I can confirm D does not have artifacts for me (asus chromebox 2014)  

Do you have custom configured OVERSCAN values? E.g. in kodi's gui calibration? Can you reset them please?  

I also have the artifacts visible, and can confirm that with overscan correction set back to 0,0 via the GUI,  the artifacts are no longer visible .
 hardware: asrock J3355m 

 Yes when resetting to 0,0 on the overscan page you cannot see the artifacts anymore. But ofcourse this way the menu's are falling behind the border of the screen..