Does turning on VRB (Motion blur reduction) add input lag?
Posted: 06 Jun 2020, 14:17
I got a XF252Q at 240 HZ, will turning on VRB Motion blur reduction add or reduce input lag and would it benefit me? I play valorant, csgo, fortnite
There is a minor amount of input lag for some strobing technologies, but some of it is extremely tiny (Between 1-3ms average at 240Hz). Older strobe technologies such as LightBoost were much more laggy, but current strobe technologies are much less laggy, and the primary cause of lag is the time differential between scanout lag (www.blurbusters.com/scanout) and the global-flash backlight.
Now, sometimes reduction of motion blur increases human reaction time that fully compensates for the lag of blur reduction. So, it is actually a situation of "Right Tool For Right Job".
VRB is like ULMB.
See HOWTO: Using ULMB Beautifully or Competitively
Blur reduction can give bigger benefit in some situations (framerate=Hz, high DPI mouse, etc) and less benefit in other situations (fixed-gaze at crosshairs, framerate lower than Hz, low DPI mouse, etc). Blur reduction is extremely noticeable for panning motions such as MOBAs, RTSs, scrolling, panning, etc. Can also help aim-stabilizing during FPS shooting, if you have a need for quicker aim stabilizing. Anything that creates display-enforced motion blur that slows down your human reaction time, can be helped by motion blur reduction, which can re-increase your human reaction time to some things.
Now, it is your personal decision, if motion blur reduction benefits and improvements to your reaction times, are able to outweigh its slight effect on display latency.