It is not the refresh rate, it's the fact that you are looking at a screen that is not moving so much while the airplane and you body is shaking; your internal

It is not the refresh rate, it's the fact that you are looking at a screen that is not moving so much while the airplane and you body is shaking; your internal sensors are telling you are moving, the eyes do not correlate the information, you get motion sickness. I had this problem in my first 50 hours of flying, sometimes even after 100 hours.