Difference between revisions of "Input lag"
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| − | + | I'''nput lag''' is the delay between pressing a button and seeing the game react.<ref>http://www.anandtech.com/show/2803</ref>The potential causes for "input lag" are described below (steps which have negligible contributions to the input lag have been omitted). Each step in the process increases "input lag", however the net result may be unnoticeable if the overall "input lag" is low enough. | |
==Causes== | ==Causes== | ||
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<br />Testing has found that overall "input lag" (from controller input to display response) times of approximately 200ms are distracting to the user.<ref>http://www.eurogamer.net/articles/digitalfoundry-lag-factor-article?page=2</ref> It also appears that (excluding the monitor/television [[display lag]]) 133ms is an average response time and the most sensitive games achieve response times of 67ms (again, excluding [[display lag]]). | <br />Testing has found that overall "input lag" (from controller input to display response) times of approximately 200ms are distracting to the user.<ref>http://www.eurogamer.net/articles/digitalfoundry-lag-factor-article?page=2</ref> It also appears that (excluding the monitor/television [[display lag]]) 133ms is an average response time and the most sensitive games achieve response times of 67ms (again, excluding [[display lag]]). | ||
| − | + | References | |
| + | {{reflist}}=== | ||
[[Category:Video hardware]] | [[Category:Video hardware]] | ||
Revision as of 11:28, 13 September 2013
Input lag is the delay between pressing a button and seeing the game react.[1]The potential causes for "input lag" are described below (steps which have negligible contributions to the input lag have been omitted). Each step in the process increases "input lag", however the net result may be unnoticeable if the overall "input lag" is low enough.
Causes
Controller
For wired controllers, this lag is negligible. For wireless controllers, opinions vary as to the effect of this lag. Some people claim to notice extra lag when using a wireless controller, while other people claim that the 4-8 milliseconds of lag is negligible.[2]
Display lag
This is the lag caused by the digital televisions and monitors. Image processing (such as upscaling, 100 Hz, motion smoothing, edge smoothing) takes time and therefore adds some degree of input lag. It is generally considered that input lag of a television below 30ms is not noticeable,[3] Discussions on gaming forums tend to agree with this value. Once the frame has been processed, the final step is the pixel response time for the pixel to display the correct colour for the new frame.
CRT tvs and monitors have no input lag.
Typical overall response times
Testing has found that overall "input lag" (from controller input to display response) times of approximately 200ms are distracting to the user.[4] It also appears that (excluding the monitor/television display lag) 133ms is an average response time and the most sensitive games achieve response times of 67ms (again, excluding display lag).
References
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