As a quick refresher, here is a video that details the differences between network latency and system latency, walks through the rendering pipeline, and discusses some basic optimizations that can be done to reduce system latency.
As a gamer, system latency impacts us in a number of ways: aiming precision, peekers advantage, and PC responsiveness. System latency breaks down into three key parts: peripheral latency, PC latency, and display latency.
Using the NVIDIA Reflex Latency Analyzer integrated in G-SYNC 360Hz Esports displays coming this Fall, you can measure end-to-end system latency, peripheral latency, and PC+Display latency. Until you can get your hands on one of these butter-smooth displays, you can get started by measuring parts of the latency pipeline using in-game latency stats in games that have integrated NVIDIA Reflex technology, or with the rendering latency metric in the GeForce Experience performance overlay.
Invest in a lower latency mouse/keyboard - Mice and keyboards can range anywhere from 1ms of latency to ~20ms of latency! Mousespecs.org has a great list of latency measurements to help you understand the latency of your mouse. Do note though -- there are other factors than latency to consider when choosing a great mouse, such as weight, maximum polling rate, wireless support, and a style that fits your hand.
NVIDIA Reflex is more effective at reducing latency and operates independently of NVIDIA Ultra low latency mode. If both NVIDIA Reflex and the Ultra Low Latency mode are enabled, NVIDIA Reflex will override Ultra Low Latency functionality.
Turn off VSYNC - The age old latency optimization; turn off VSYNC. VSYNC causes back pressure from the display that reverberates through the entire system. In general, we highly recommend turning VSYNC OFF if you are willing to tolerate tearing.
Consider Faster Hardware - There is only so much optimization you can do in software. At some point, the best way to get lower latency is to invest in faster hardware. A faster CPU and GPU can significantly reduce latency throughout the system.
Before NVIDIA Reflex, gamers had to make this tradeoff between higher graphics settings and better latency. With the NVIDIA Reflex Low Latency mode, gamers can increase graphics settings and resolution without significantly increasing latency -- latency is only increased by the raw GPU render time.
There are other small tweaks that can be done to help reduce latency such as MSI mode, GPU cache write combining, process scheduling quantum modes, interrupt CPU affinity, processor idle states, and IRQ sharing. However, these optimizations are situational and can actually make latency worse in some cases. We recommend testing on your own system and experimenting to find which modes help your particular configuration!
Turn on G-SYNC Esports mode - If you have a monitor that supports G-SYNC Esports mode, enabling this option will ensure settings like variable backlight are disabled and the monitor is running at max performance - reducing display processing latency.
2. Lower Latency in GameFast responses are incredibly important in games. Lightning fast responses are essential for positioning the camera or aiming for a headshot. After setting the priority higher for online games, XFast LAN can lower the latency in games to assist you to easily become a winner.Time latency in World of Warcraft: Cataclysm
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