Low Resolution High Refresh Rate

Talk about overclocking displays at a higher refresh rate. This includes homebrew, 165Hz, QNIX, Catleap, Overlord Tempest, SEIKI displays, certain HDTVs, and other overclockable displays.
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cizeta
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Low Resolution High Refresh Rate

Post by cizeta » 05 Oct 2021, 04:14

Are there monitors that fair well with overclocking to super high refresh rates at 720p or even 480p? I play rhythm games where motion clarity and lag are much more important for the experience than anything else. Coming from primarily using a CRT, I'm curious where the options for this have been heading.

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Chief Blur Buster
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Re: Low Resolution High Refresh Rate

Post by Chief Blur Buster » 06 Oct 2021, 01:50

The Zisworks 480 Hz is a good example.

The other option is a Blur Busters Approved 2.0 strobe backlight instead.
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thatoneguy
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Re: Low Resolution High Refresh Rate

Post by thatoneguy » 06 Oct 2021, 22:30

Chief Blur Buster wrote:
06 Oct 2021, 01:50
The other option is a Blur Busters Approved 2.0 strobe backlight instead.
In terms of motion clarity perhaps but typically strobe backlights in LCD's add more lag(when strobing). The OP mentioned rhythm games where in terms of input lag only the Zisworks LCD Kit matches CRTs afaik.

The 360hz/1080p monitors are also a pretty good option provided OP has the hardware to deliver 1080p@360fps. You get around 3.33ms MPRT Sample and Hold that way.

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Re: Low Resolution High Refresh Rate

Post by Chief Blur Buster » 07 Oct 2021, 15:26

Solo rhythm games are slightly less lag-critical than first person shooters. One can pre-train themselves to compensate for lag.

Remember, some of the lag includes the human -- aka human reaction time.

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Sometimes the motion blur reduction of strobe backlights reduce human reaction time MORE than the input lag added by strobe backlights.

It's play by play, depending on gaming technique, gaming tactics & how motion-blur-sensitive the technique is.

Sometimes blur reduction outweighs strobe lag (a very mere +2ms extra lag for ViewSonic XG2431 strobe backlight) because your human reaction time is 2ms faster because of clearer motion for a specific game (e.g. trying to identify fast-moving camoflaged objects via eye tracking).

Frankly speaking, a careful cherry-picking of a strobe backlight is worthwhile for certain applications and use cases. Some games benefit less (CS:GO) while other games benefit more (Rainbow Six and Rocket League). Some of the top Rainbow Six champs use strobing, because the benefits outweigh the minor lag penalty (240Hz+ strobing on the best 240Hz strobe backlights, can have a lag penalty sufficiently minimized that other things outweigh)

Also, one of the biggest problem with strobe backlights is the latency gradient caused by VSYNC OFF with strobe backlights, especially at lower refresh rates. Sometimes one really want to use either RTSS Scanline Sync to make strobe really shine (perfect framerate=Hz in the lowest latency method possible without the traditional VSYNC ON latencies associated)

VSYNC OFF + nonstrobed = latency of screen areas is top=center=bottom
VSYNC OFF + strobed = latency of screen areas is top>center>bottom
VSYNC ON + nonstrobed = latency of screen areas is top<center<bottom
VSYNC ON + strobed = latency of screen areas is top=center=bottom

What many don't realize for rhythm games is that latency gradients can screw around with reaction times, especially with different lags for different pixels of the screen (from scanout latency -- high speed videos at www.blurbusters.com/scanout ...) since not all pixels refresh at the same time. And sometimes the relative time-symmetry between scanout-following technologies (VSYNC OFF) and global technologies (global-frame VSYNC ON in sync with global flash-strobing) can sometimes unify the latency of all pixels on the entire screen surface (even if absolute lag is slightly worse).

TL;DR: Sometimes one has to pick poisons. Avoiding strobe backlights like the plague is sometimes a mistake for certain types of video games! One has to understand (A) human lag; and (B) the latency gradient behaviors.
Head of Blur Busters - BlurBusters.com | TestUFO.com | Follow @BlurBusters on Twitter

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Forum Rules wrote:  1. Rule #1: Be Nice. This is published forum rule #1. Even To Newbies & People You Disagree With!
  2. Please report rule violations If you see a post that violates forum rules, then report the post.
  3. ALWAYS respect indie testers here. See how indies are bootstrapping Blur Busters research!

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