desync / hpet / dpc latency

[yb11111]

Hello, I've struggled a variety of issues regarding input delay/mouse feeling sluggish, desync in games etc. I just learn to live with it and try to mitigate the best I can. I am on windows 10 22h2 as of now, I finish following a scewin guide and disable hpet in bios, and I notice 0 change in gaming so far besides high precision event timer is no longer in my device manager. I still feel like desync is here, mouse feels kind of good but in game it still doesnt feel what i would consider normal. this is what my dpc look like, it will go to below 10 us and spike to 1000 over and over, im not sure why. any advice?

[soul4kills]

How are you interpreting the graph?

DPC Latency will be HIGHER when YOU'RE NOT doing anything. DPC Latency goes lower when you are doing things, as your actions are making a request for a shorter lower Timer Resolution. When there's no request for a short Timer Resolution, it will be longer. For example, if you move your mouse rapidly or an extended period and watch how the analyzer reacts. Has a greater effect if you have a high polling rate of 1000hz or more, because 1000hz is 1ms. So if it's polling at 1000hz, it's only going to request for a Timer Resolution of 1ms.

I've been lurking these forums for a quite a bit and people have the misunderstanding that when you're idle, your DPC latency should be super low. But that's not the case, it's the exact opposite.

[benst]

generally speaking dpc latency doesnt matter, especially if its latencymon (i cant see the picture LOL) - how many settings were covered in the guide? most of the time SCEWIN has hundreds of settings to change and a properly tweaked bios should have the biggest difference out of anything

also, why uselegacyapicmode Yes and x2apicpolicy No ?

[Slender]

Hello, I've struggled a variety of issues regarding input delay/mouse feeling sluggish, desync in games etc. I just learn to live with it and try to mitigate the best I can. I am on windows 10 22h2 as of now, I finish following a scewin guide and disable hpet in bios, and I notice 0 change in gaming so far besides high precision event timer is no longer in my device manager. I still feel like desync is here, mouse feels kind of good but in game it still doesnt feel what i would consider normal. this is what my dpc look like, it will go to below 10 us and spike to 1000 over and over, im not sure why. any advice?

whats is your mobo / cpu?

[naporitan]

hpet should never be disabled... since tsc works together with hpet and when you disable hpet tsc the timer starts to drift.
no need to write anything in bcdedit etc

[Slender]

https://forum.vegalab.ru/showthread.php?t=91733

thats your thread?

[pandrhola]

Hello, I've struggled a variety of issues regarding input delay/mouse feeling sluggish, desync in games etc. I just learn to live with it and try to mitigate the best I can. I am on windows 10 22h2 as of now, I finish following a scewin guide and disable hpet in bios, and I notice 0 change in gaming so far besides high precision event timer is no longer in my device manager. I still feel like desync is here, mouse feels kind of good but in game it still doesnt feel what i would consider normal. this is what my dpc look like, it will go to below 10 us and spike to 1000 over and over, im not sure why. any advice?

Since HPET’s off with no luck, you try running LatencyMon longer in-game to nail the culprit—could be ndis.sys or dxgkrnl.sys.