From my experience a non-continous user action with a response under 100ms is perceived as "instant". Continuous input is different, and humans can perceive individual frames at 16ms for sure.
The video/audio is well studied, I forget the number but it's pretty short, this is out of my butt but I think it's around 20ms?
Keep in mind frame drops are different from average FPS. Every frame taking 16ms will feel far smoother then most frames taking 8ms but with spikes of 80ms (which is far more common).
The video/audio is well studied, I forget the number but it's pretty short, this is out of my butt but I think it's around 20ms?
Keep in mind frame drops are different from average FPS. Every frame taking 16ms will feel far smoother then most frames taking 8ms but with spikes of 80ms (which is far more common).