"The effect became noticeable once frame rates passed a certain level in the early 2000's and after that I was unable to play most FPS games." This is a little

"The effect became noticeable once frame rates passed a certain level in the early 2000's and after that I was unable to play most FPS games." This is a little surprising to hear given that it it's usually low frame rates that are associated with motion sickness in VR. Indeed achieving sufficiently high frame rates to minimize motion sickness is currently one of the primary technical challenges of developing VR experiences. How did you conclude that it was rising frame rates that led you to develop this reaction?