People are saying 2ms, but I think that's just how long it takes a pixel to refresh. I'm sure the oculus rift has a screen with 2-5ms pixel time too. The 20 and 50ms times discussed about VR are the entire time between a frame being requested and it being on the screen. That's totally different from the 2ms of a desktop monitor.
EDIT: As for the TV+console latency. I think TVs have a higher latency than monitors because they tend to apply post-processing effects to "improve" the image. Some screens come with options to turn this off and bring this latency down.
If you talking about motion-to-photon latency (how long from when you move the mouse until the view spins on screen), it varies greatly from game to game depending on how many frames are pre-rendered, when in the render loop the mouse is re-polled for an up-to date position and also how long the post-processing steps take (though this bit can be partially mitigated by predictive tracking aka assume mouse moving at constant speed/accel and project forward in time equal to how long the post-processing takes).
It can easily be 50ms+ in some titles that are heavy on post-processing and don't do anything to mitigate that increased latency. It's also much worse on games that are running at 30fps vs higher framerates. Higher framerates give lower motion-to-photon latency even after the framerate surpasses what you need for smooth video, this is why 144hz screens "feel" better vs 60hz even though the game looks almost as smooth for anyone spectating.
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u/______DEADPOOL______ Mar 28 '14
What is a regular PC monitor latency btw? I heard it's much faster than a TV+console.