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;Before diving in, let's distinguish between four key terms. Display lag, input lag, system latency, and [https://old.reddit.com/r/apexlegends/comments/f02vxz/apex_netcode_still_worst_of_all_brs/ netcode/network lag]. They might sound similar, but they affect your experience in different ways. While display and system lag can subtly influence input lag, it's crucial not to mix them up.
:''See GamersNexus: [https://www.youtube.com/watch?v=Fj-wZ_KGcsg Framerate Isn't Good Enough: Latency Pipeline, "Input Lag," Reflex, & Engineering Interview] and [https://youtu.be/C_RO8bJop8o Fixing GPU & CPU Benchmarks: Introducing Animation Error] videos for more information about some of these''.
==Causes==
See [[Input_lag#External_Links|these websites]] for various controllers and keyboard/mouse devices for input lag performance benchmarks.
* Back in the days some people claim that [[Wikipedia:DIN_connector|DIN/mini-DIN connection]] keyboards and mice give better results compared to cheap [[Wikipedia:USB|USB connection]] peripherals due to the nature of the technology. Although this is far from the truth [https://forums.blurbusters.com/viewtopic.php?t=8411#p65756 it has better handling of the data], whereas the USB busses can be more easily interrupted etc(kinda similar to wired/wireless polling consistency situation mentioned above).
:: [https://www.youtube.com/watch?v=eEswl6kZq5k Battle(non)sense: Keyboard Input Lag 125, 250, 500, 1000Hz USB vs. PS/2]
==External Links==
*[https://inputlag.science/ inputlag.science] - repository of knowledge about input lag in gaming<br/>*[https://docs.google.com/spreadsheets/d/1XvuDUHluuqDJ0DmF_PrWIjsLBgeg8CKVlL0w_Cyguxk/edit#gid=1101422075 Run-Ahead Wiki]<br/>*[https://sensor.fyi/mice/ Mouse devices sensor list]<br/>*[https://old.reddit.com/user/DestinyXZ9/submitted/ DestinyXZ9's investigations about input lag in various emulators]<br/>*[https://www.rtings.com/monitor/tests/inputs/input-lag RTINGS: Input Lag of Monitors]<br/>*[https://www.rtings.com/tv/tests/inputs/input-lag RTINGS: Input Lag of TVs]<br/>*[https://www.rtings.com/monitor/tests/motion/motion-blur-and-response-time RTINGS: Pixel Response Time of Monitors]</br>*[https://www.rtings.com/tv/tests/motion/motion-blur-and-response-time RTINGS: Pixel Response Time of TVs]</br>*[https://tftcentral.co.uk/reviews_index TFTCentral: Reviews and Input Lag analysis of Monitors]<br/>*[https://www.aperturegrille.com/reviews/ ApertureGrille: Reviews and Input Lag analysis of Monitors]<br/>*[https://docs.google.com/spreadsheets/d/1KlRObr3Be4zLch7Zyqg6qCJzGuhyGmXaOIUrpfncXIM/edit#gid=0 Controller latency on MiSTer]<br/>*[https://www.youtube.com/watch?v=ahsO5bhBUtk Rocket Science: Controller Input Lag comparison video]<br/>*[https://www.rtings.com/mouse/tests/control/latency RTINGS: Mouse Click Latencies]<br/>*[https://www.rtings.com/mouse/tests/control/cpi RTINGS: Mouse CPI and Speed-Related Accuracy Variation/SRAV results]<br/>*[https://www.rtings.com/mouse/tests/control/sensor-latency RTINGS: Mouse sensor latencies]<br/>*[https://www.rtings.com/keyboard/tests/latency RTINGS: Keyboard Latencies]<br/>*[https://mousespecs.org/mouse-click-latencies/ mousespecs: Mouse Click Latencies]<br/>*[https://www.anandtech.com/show/2803 Derek Wilson/AnandTech: Exploring Input Lag Inside and Out]<br/>*[https://blurbusters.com/gsync/preview2/ BlurBusters: Preview of NVIDIA G-SYNC, Part #2 Input Lag]<br/>*[https://www.retrorgb.com/bsnes-runahead-mode-lag-tested.html RetroRGB: BSNES Runahead Mode Lag Tested]<br/>*[https://www.youtube.com/@RocketJumpNinja/videos Rocket Jump Ninja] - YouTube channel dedicated to mouse reviews</br>*[https://www.youtube.com/@BattleNonSense/videos Battle(non)sense] - YouTube channel dedicated to analysing netcode performance of games and testing input lag, system responsiveness etc.<br/>*[https://www.youtube.com/@FR33THY/videos FR33THY] - YouTube channel dedicated to computer hardware and peripherals for testing input lag and system responsiveness etc.<br/>*[https://github.com/hrydgard/ppsspp/issues/17685 PPSSPP: Input lag too high, ideas for improvement]<br/>*[https://forums.libretro.com/t/an-input-lag-investigation/4407 Brunnis: An input lag investigation]*[https://sites.google.com/view/noodallsinputlagtestingresults/video-interrupt-method-results noodalls Input Lag Testing Results]
[[Category:FAQs]]
