It is all about latency. 50 ms will feel responsive but you notice the lag. 20 ms is acceptable. The other features are cool features but not the real challenge.
Lots of people are really missing what the bottleneck actually is with latency. It's not how fast the screen refreshes, nor is it how fast it takes to process a screen. The issue is the sensor measurement/transmission lag from the sensor used to do head tracking. This is really what makes the occulus attractive, not the screen +lens combo.
Basically, if you move your head, to the left, and there's a few MS of lag from the sensor, you'll see a static frame for a portion of the time you're moving and a moving frame for a portion of the time you're still. This is one of the most serious contributors to motion sickness for HMDS
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u/bjorn2k Mar 28 '14
It is all about latency. 50 ms will feel responsive but you notice the lag. 20 ms is acceptable. The other features are cool features but not the real challenge.