Does matching polling rate to monitor Hz make sense or no?

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Re: Does matching polling rate to monitor Hz make sense or no?

Post by Chief Blur Buster » 06 Apr 2021, 17:59

RocketRager wrote:
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Re: Does matching polling rate to monitor Hz make sense or no?

Post by RocketRager » 07 Apr 2021, 11:18

Chief Blur Buster wrote:
06 Apr 2021, 17:59
RocketRager wrote:
06 Apr 2021, 17:55
A real hero. If I rank up past champ, I’m donating to the site somehow lol ;)
A Blur Busters Patreon is coming later this year -- keep an eye out for it!
100% will utilize.

Just ordered the VG259QM. I see the owners thread with 34 pages of content....

I play exclusively rocket league. Is there a quick dirty group of settings I can just do fast and begin testing?

I’m interested in lowest response time. Maximum frames, lowest input lag, I don’t mind minimal screen tearing. I may not even notice it. I just need the maximum amount of information per second. I see all about ELMB helping with the ball tracking maybe etc.

What about my nvidia settings though? Gsync on + vsync too? No vsync? I saw somewhere someone said gsync needs vsync sometimes? Seems weird.

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axaro1
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Re: Does matching polling rate to monitor Hz make sense or no?

Post by axaro1 » 07 Apr 2021, 11:25

Chief Blur Buster wrote:
06 Apr 2021, 17:48
Theoretically Possible: Custom Frame Rate Capping Software That Syncs To Poll Rate
If you are a software developer, there is a solution
Now, there are potential workarounds, like writing a custom frame-rate capper that uses a mousehook (LowLevelMouseProc callback and the WH_MOUSE_LL event). Basically an RTSS clone that monitors the mouse poll rate and synchronizes frame rate to a divisor of the mouse poll rate. And using a 280 Hz VRR monitor to achieve the low-lag 250fps frame rate cap synchronized to poll rate (1000Hz).

Recipie:
1. VRR display
2. Refresh rate capable of syncing to poll rate
3. Custom frame rate capping software that syncs to poll rate (or divisor thereof)

However, just merely upgrading to 240Hz display refresh rate will still be a big upgrade even for refresh-rate-unsynchronized 1000Hz device poll rate.
Does synchronizing SPI with USB polling events in the mouse firmware matter if you use a 240hz monitor? Does it reduce microstutters?
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Re: Does matching polling rate to monitor Hz make sense or no?

Post by Chief Blur Buster » 09 Apr 2021, 23:13

axaro1 wrote:
07 Apr 2021, 11:25
Chief Blur Buster wrote:
06 Apr 2021, 17:48
Theoretically Possible: Custom Frame Rate Capping Software That Syncs To Poll Rate
If you are a software developer, there is a solution
Now, there are potential workarounds, like writing a custom frame-rate capper that uses a mousehook (LowLevelMouseProc callback and the WH_MOUSE_LL event). Basically an RTSS clone that monitors the mouse poll rate and synchronizes frame rate to a divisor of the mouse poll rate. And using a 280 Hz VRR monitor to achieve the low-lag 250fps frame rate cap synchronized to poll rate (1000Hz).

Recipie:
1. VRR display
2. Refresh rate capable of syncing to poll rate
3. Custom frame rate capping software that syncs to poll rate (or divisor thereof)

However, just merely upgrading to 240Hz display refresh rate will still be a big upgrade even for refresh-rate-unsynchronized 1000Hz device poll rate.
Does synchronizing SPI with USB polling events in the mouse firmware matter if you use a 240hz monitor? Does it reduce microstutters?
SPI means thousands of things to me, mostly non-mouse-related. Can you narrow down your question to something specific? Unless you’re referring to sensor rate (which is not necessarily relayed over an SPI bus).
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sk1p
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Re: Does matching polling rate to monitor Hz make sense or no?

Post by sk1p » 10 Apr 2021, 02:06

I have Razer Viper 8kHz, 240hz IPS VG279QM, i5 8600k + gtx 1060, with 8000hz in CS GO sometimes I have insane frags, sometimes insane misses :D, with 1000hz I play more stable and better, according to this theory will try to check 2000 hz )) ty

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Re: Does matching polling rate to monitor Hz make sense or no?

Post by axaro1 » 10 Apr 2021, 04:03

Chief Blur Buster wrote:
09 Apr 2021, 23:13
SPI means thousands of things to me, mostly non-mouse-related. Can you narrow down your question to something specific? Unless you’re referring to sensor rate (which is not necessarily relayed over an SPI bus).
I mean synchronizing optical sensor data with polling events, like Razer is doing with Motionsync.

It makes mousetester graph look a lot better but I'm wondering if it has some actual benefit in terms of reducing microstutters or sensor jitters.
XL2566K* | XV252QF* | LG C1* | HP OMEN X 25 | XL2546K | VG259QM | XG2402 | LS24F350[RIP]
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DarkMartyr420
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Re: Does matching polling rate to monitor Hz make sense or no?

Post by DarkMartyr420 » 29 Aug 2021, 00:52

I have a XB273U GX 240hz monitor and 8khz polling mouse and keyboard. Realistically I get 120FPS in most games that I play what should I set the polling rate to?

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Re: Does matching polling rate to monitor Hz make sense or no?

Post by Chief Blur Buster » 26 Jul 2022, 21:30

Anonymous475812 wrote:
23 Jul 2022, 21:19
Chief Blur Buster wrote:
06 Apr 2021, 17:09
For unsynchronized poll rates, you just need to oversample by about 6x, to prevent any mouse microstutters.

It is true that 1000Hz poll is too low for 360Hz monitors, since that's only a 3x oversample, when eliminating the mouse microstutters requires a higher oversampling factor, about 4 to 6x, preferably closer to at least 6x oversample.
How did you determine that it should be at least 6x oversample and would there be any benefit going beyond that? In example 2000Hz poll for 144Hz monitors, which is 14x oversample.
Visual jitter experience, in the phantom array effects;

6x is just the minimum. Jitter can still be hugely visible, so I still recommend 2000Hz poll even for lower refresh rates.

There is more recent research (than mine), at:
viewtopic.php?f=7&t=9785
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