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→BIOS, OS misconfiguration and placebo effect
For wired input devices make sure using reasonable DPI/CPI value and polling rate settings for [https://www.youtube.com/watch?v=lc7JVjcPzL0 optimizing input resolution] and [https://www.silverfast.com/show/knowledge_12/es.html matrix].<ref>[https://www.youtube.com/watch?v=6AoRfv9W110 Battle(non)sense: Low DPI vs. High DPI and Polling Rate Analysis]</ref>
===BIOS, Bad driver, OS misconfiguration and placebo effect===
Some people claims that BIOS settings (most motherboard vendors and models usually) and Windows operating systems by default comes with registry settings, bloated services etc. that causes little bit extra input lag and if you tweak these settings it will affect input delay positively. These kind of tweaks on internet considerably popular due to placebo effect but actually some of them really improves input delay a tiny bit. If you're obsessed with hacking OS and improving your system responsiveness you can check out [[Input_lag#External_Links|FR33THY's latency analysis]] which is includes useful scripts and tweaks. Also see [[#Ways_to_reduce_input_lag|ways to reduce input lag section]] for more proper ways to reducing input delay.
Also make sure using proper drivers for your devices otherwise it will affect your system responsivess negatively (High DPC Latency/spikes etc.), see [https://old.reddit.com/r/Amd/comments/j4djqe/experiencing_high_dpc_latency_a_possible_cause/ this thread] for more information.
==Ways to reduce input lag==
