Hi,
Judging by the appearance of the calibration screen I would say that what you see is unlikely to be the result of a bad calibration, perhaps partially but not as primary root cause. The eye tracking performance obtained is to some extent individual, and typically, for every person, you will find worse performance in the upper corners than at the center. I do not know what distance you are from the screen, but you can try to see if the noise is reduced when you get closer or further from the screen.
I can also tell you that we are aware that some people (like you) experience unsatisfactory noise is the upper corners and the development team is actively improving our algorithms to address it, so please try out our new releases as soon as they are out.