A:AnswerThis sounds like a video card issue not a monitor issue, see if the video card has any updates, you could also try a different connection method if you have any other connection types.
A:AnswerYes you could attach it to an arm, but you have to make sure the arm is strong enough to support the weight. I purchase Mantel Mount ( https://www.mantelmount.com/ ) to place my screen on the wall and it works great, you might want to check that site out.
Hope this information helps.
A:AnswerIt comes with a wall bracket, a nom rotating bracket. If i understand your question, you can use this mount and its mounting layout to figure a way to mount it with your specific bracket setup. May take a trip to the hardware store.
A:AnswerThe monitor does very well with movies. Remember most movies are not formatted to fit the screen size so if you want to take advantage of it shop around for the movies that do.
A:AnswerThis probably can handle the Xbox series X but I would not use it for this. The monitor is not very sharp for gaming. I would get a QHD monitor for any gaming console. This is just a wide (very wide) HD monitor.