Why am I finding it easier to aim on 144Hz instead of 240Hz? (BenQ XL2546)

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drmcninja
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Why am I finding it easier to aim on 144Hz instead of 240Hz? (BenQ XL2546)

Post by drmcninja » 13 Feb 2021, 00:38

I accidentally played on 144Hz for a bit and realized I'm aiming better.

It definitely looks like there's a lower framerate (subtle choppiness), but the colors seem a bit more crisp/vivid. It feels more... instant. Going back to 240Hz, it felt a little more floaty/laggy, albeit much smoother framerate.

Both refresh rate states had DyAc and AMA set to Premium.

What could cause this? Does DyAc have lower lag or better responsiveness on 144Hz? Does the lower refresh rate put less strain on my GPU/CPU so what I'm seeing is equivalent to the fps-boosting effect of lowering details?

drmcninja
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Re: Why am I finding it easier to aim on 144Hz instead of 240Hz? (BenQ XL2546)

Post by drmcninja » 13 Feb 2021, 00:38

What is the performance hit from having a 2nd or 3rd monitor? What about when cloning the main game screen? Is there a noticeable performance hit from doing that?

sk1p
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Re: Why am I finding it easier to aim on 144Hz instead of 240Hz? (BenQ XL2546)

Post by sk1p » 13 Feb 2021, 02:40

I had the same issue with xl2540, aw2518hf, xf252qx( this one was pretty close to my 144hz Asus vg248qe) and LG 27gk750f. I connected this with input latency of the 240hz TN panels, then I tried Asus vg279qm (240hz-280 IPS panel) and everything is fine with this panel, my experience becomes better than on my old 144hz Asus vg248qe.

drmcninja
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Re: Why am I finding it easier to aim on 144Hz instead of 240Hz? (BenQ XL2546)

Post by drmcninja » 13 Feb 2021, 11:14

That's interesting. It's just this 240Hz TN panel shared by all these monitors which is like this? More input lag at 240Hz than 144Hz? Is this a well known thing? Has anyone else experienced it as well?

Does the new XL2546K have the same issue?

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DukeDice929
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Re: Why am I finding it easier to aim on 144Hz instead of 240Hz? (BenQ XL2546)

Post by DukeDice929 » 13 Feb 2021, 11:47

I think it's just better response time on lower refresh rates = more pixels in refresh rate window. I had this monitor and 180-200Hz felt better than "native" 240Hz (regardless of AMA settings). Specificity of the panel, like sk1p mentioned earlier.
For best results with XL2546 use DyAc Premium + AMA High + 182Hz Tweak + Strobe utility. Have fun 😉
My bad English :0

drmcninja
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Re: Why am I finding it easier to aim on 144Hz instead of 240Hz? (BenQ XL2546)

Post by drmcninja » 13 Feb 2021, 13:17

Why is AMA High better than Premium? It felt better on Premium to me. But that was 240Hz.

Where can I find the 182Hz tweak and Strobe Utility?

drmcninja
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Re: Why am I finding it easier to aim on 144Hz instead of 240Hz? (BenQ XL2546)

Post by drmcninja » 13 Feb 2021, 16:01

I added the 182Hz resolution via Nvidia. THere was no back porch field, but everything else was the same. Then I switched to it and tried the 'Area' thing under Service Menu and I couldn't get the strobe crosstalk area to completely go off the screen. I tried from 0 to 100. I wound up leaving it at 10.

It felt good around 90 something but I noticed that the band kept slowly moving every few seconds/minutes across the screen, so... not sure what I was to achieve here.

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Re: Why am I finding it easier to aim on 144Hz instead of 240Hz? (BenQ XL2546)

Post by DukeDice929 » 14 Feb 2021, 01:05

drmcninja wrote:
13 Feb 2021, 16:01
Why is AMA High better than Premium?
Less inverse ghosting artifacts even with DyAc enabled = more comfortable gameplay to your eyes. (no pics sorry)

Strobe Utility thread: viewtopic.php?f=13&t=3894
Strobe Crosstalk: Blur Reduction article by Chiеf: https://blurbusters.com/faq/advanced-st ... stalk-faq/
ToastyX CRU: https://www.monitortests.com/forum/Thre ... tility-CRU

drmcninja wrote:
13 Feb 2021, 16:01
Then I switched to it and tried the 'Area' thing under Service Menu and I couldn't get the strobe crosstalk area to completely go off the screen.
182Hz is not mandatory along with other settings. Sooner or later, it will turn out to find a suitable value within 180-200Hz.
This is what I was using at the time: viewtopic.php?p=58887#p58887
drmcninja wrote:
13 Feb 2021, 16:01
I noticed that the band kept slowly moving every few seconds/minutes across the screen, so... not sure what I was to achieve here.
Something is wrong here. :?
Crosstalk should remain stable even if it is still present on the screen. Try to use ToastyX CRU instead of nvidia.
My bad English :0

drmcninja
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Re: Why am I finding it easier to aim on 144Hz instead of 240Hz? (BenQ XL2546)

Post by drmcninja » 15 Feb 2021, 22:31

Tried it with ToastyX CRU version 1.5.1, I copied these settings: https://blurbusters.com/faq/advanced-st ... stalk-faq/ (1584 vertical total @ 182Hz for XL2546). Made sure to copy all the boxes. Same thing. When I move 'Area' from 10 (the default) and try to push the "band" off the screen, the band keeps moving slowly across the screen (after a few seconds you notice it's now a few rows higher, and so on).

The default value doesn't seem to do that and keeps the band at the top 2 rows and bottom 3 or 4, keeping the middle clear.

Maybe because I don't have VSync enabled in Nvidia driver? Who knows.

It's weird because the moving UFO thing looks best at 240Hz for me. It's just that now I've noticed I have a little less input lag at lower refresh otherwise 240Hz would be the clear choice.

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Re: Why am I finding it easier to aim on 144Hz instead of 240Hz? (BenQ XL2546)

Post by Chief Blur Buster » 16 Feb 2021, 00:46

DukeDice929 wrote:
13 Feb 2021, 11:47
I think it's just better response time on lower refresh rates = more pixels in refresh rate window.
Higher refresh rates will spew larger VSYNC OFF frameslices for a given refresh rate, showing more pixels per frame.

But, DyAc does have better response at lower refresh rates in a roundabout way.
drmcninja wrote:
13 Feb 2021, 00:38
What could cause this? Does DyAc have lower lag or better responsiveness on 144Hz? Does the lower refresh rate put less strain on my GPU/CPU so what I'm seeing is equivalent to the fps-boosting effect of lowering details?
DyAc has less strobe crosstalk at 144Hz than 240Hz.

Another theory: Better reaction times with clearer images. DyAc also looks much better with framerates far beyond refresh rate, rather than framerates below refresh rate, with less double-image effects caused by low frame rate too.

You're getting more (overall absolute) lag, but you're seeing things clearer, causing you to have faster reaction time.
(Faster reaction time that compensates for more display lag)

TL;DR:
1. For strobed, you have less strobe crosstalk the lower refresh rate you go.
2. For strobed, you have less strobe microstuttering/jitter effect if you have frame rate bigger excess beyond refresh rate.
So you see things more clearly = react faster.

Sometimes the faster reaction time more than compensates for the slight extra display lag of motion blur reduction (strobing) behaviors. This is a known benefit/tradeoff of motion blur reduction (DyAc).

You might want to improve things further via using a Large Vertical Total -- because of the Quick Frame Transport benefits of Large Vertical Totals (which can also reduce strobe lag a bit too).
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