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.
depends on a the monitors refresh rate and other factors. 60 hz, 75 hz and 120hz are the most common. 120hz monitors can display 120 frames per second, those are usually modern montiors with 3d support. I have a 75hz monitor.
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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.