On latency, you're right. Minimising it is best. There's no circumstance in which increasing the frame rate causes nausea. In fact, it tends to decrease latenc

On latency, you're right. Minimising it is best. There's no circumstance in which increasing the frame rate causes nausea. In fact, it tends to decrease latency and reduce nausea. In the limit, reality has an essentially-infinite frame rate and doesn't cause nausea. When low frame rates seem choppy, that's normally because there's a mismatch between frame rate and display refresh. GSync/freesync fix that to make things smooth even when the frame rate drops. Choppiness can also be due to the impulse response; technologies with a bright and short apparent pulse (CRT, Plasma, some OLED) will show better 'motion' than those that display and hold (LCD, some OLED).