"Pictus" Windows Tweaks and Stuff.

[Kees49]

Setting Processor performance time check interval to 5000 ms is generally a bad idea because it makes CPU frequency scaling extremely unresponsive.

This parameter defines how often the OS evaluates CPU load to adjust P-states. At 5000 ms, the system only checks every 5 seconds, which is far too slow for modern, bursty workloads.

As a result, the CPU may stay at a low frequency during short load spikes or remain unnecessarily boosted after the load is gone. This leads to poor responsiveness and inefficient performance behavior.

[Kees49]

The default idle demote/promote thresholds (40% / 60%) introduce a hysteresis window that prevents excessive state switching. Lowering or tightening these values can cause frequent state transitions, increasing latency variability and DPC jitter. For low-latency audio workloads, the defaults provide the most stable and predictable CPU behavior.

[Pictus]

Setting Processor performance time check interval to 5000 ms is generally a bad idea because it makes CPU frequency scaling extremely unresponsive.

The default idle demote/promote thresholds (40% / 60%) introduce a hysteresis window that prevents excessive state switching. Lowering or tightening these values can cause frequent state transitions, increasing latency variability and DPC jitter. For low-latency audio workloads, the defaults provide the most stable and predictable CPU behavior.

Thanks for the heads-up, but instead of just asking the AI ​​and pasting its answer here, try it
and see the results for yourself. I and many others have observed improvements.
Like Microsoft, AI still falls short in optimizing performance to achieve the lowest
possible DPC(Deferred Procedure Call) in Windows.

[Kees49]

Fair. This is indeed an analysis by ChatGPT. It’s technically substantiated and sounds highly plausible. Tweaks that work for some people, empirically observed but not technically grounded, are not reliable to me. To each their own…

[Pictus]

Fair. This is indeed an analysis by ChatGPT. It’s technically substantiated and sounds highly plausible. Tweaks that work for some people, empirically observed but not technically grounded, are not reliable to me. To each their own…

Yes, there's no guarantee it will work for everyone, but I haven't seen it cause problems
for desktop users (not laptops) yet, quite the opposite, and I'm not the only one.
Processor idle demote threshold/promote at 100% may cause problems, but not at 95%.
Check this video.

[uOpt]

Setting Processor performance time check interval to 5000 ms is generally a bad idea because it makes CPU frequency scaling extremely unresponsive.

The default idle demote/promote thresholds (40% / 60%) introduce a hysteresis window that prevents excessive state switching. Lowering or tightening these values can cause frequent state transitions, increasing latency variability and DPC jitter. For low-latency audio workloads, the defaults provide the most stable and predictable CPU behavior.

Thanks for the heads-up, but instead of just asking the AI ​​and pasting its answer here, try it
and see the results for yourself. I and many others have observed improvements.
Like Microsoft, AI still falls short in optimizing performance to achieve the lowest
possible DPC(Deferred Procedure Call) in Windows.

What are your DPC numbers before and after setting the clock adjust frequency to 5 seconds?

[Pictus]

What are your DPC numbers before and after setting the clock adjust frequency to 5 seconds?

I don't remember, but it's so easy to do and 100% risk-free.

- First create a System Restore Point
https://www.elevenforum.com/t/create-sy ... s-11.3602/

- How to open Elevated Command Prompt as Administrator
https://www.elevenforum.com/t/open-elev ... s-11.4201/

- How to change Power Plan in Windows
https://www.elevenforum.com/t/change-po ... s-11.1439/


- To select the Ultimate Performance power plan, TYPE
powercfg /setactive e9a42b02-d5df-448d-aa00-03f14749eb61

- To set Processor performance time check interval = 5000 (Ultimate power plan default = 15)
powercfg /setacvalueindex e9a42b02-d5df-448d-aa00-03f14749eb61 54533251-82be-4824-96c1-47b60b740d00 4d2b0152-7d5c-498b-88e2-34345392a2c5 5000

- To set Processor idle demote threshold = 95 (Ultimate power plan default = 40)
powercfg /setacvalueindex e9a42b02-d5df-448d-aa00-03f14749eb61 54533251-82be-4824-96c1-47b60b740d00 4b92d758-5a24-4851-a470-815d78aee119 95

- To set Processor idle promote threshold = 95 (Ultimate power plan default = 60)
powercfg /setacvalueindex e9a42b02-d5df-448d-aa00-03f14749eb61 54533251-82be-4824-96c1-47b60b740d00 7b224883-b3cc-4d79-819f-8374152cbe7c 95

[uOpt]

I know how to get the numbers on my system. I was curious whether you had gotten them before adding the recommendation.

[Pictus]

I know how to get the numbers on my system. I was curious whether you had gotten them before adding the recommendation.

I know you know, but others may not.

I found the results when I tested(tweaked Windows) it a while ago via Microsoft XPERF
Processor performance time check interval = 50
ntoskrnl.exe DPC = 913

Processor performance time check interval = 5000
ntoskrnl.exe DPC = 156

[Pictus]

Fair. This is indeed an analysis by ChatGPT. It’s technically substantiated and sounds highly plausible. Tweaks that work for some people, empirically observed but not technically grounded, are not reliable to me. To each their own…

From ChatGPT:
When you set both Promote and Demote to 95%, you’re essentially telling the CPU:

“Stay in your current state unless load is extremely high or extremely low.”
This reduces how often the CPU jumps between power states.

Why it can feel better
You might see improvements because:

Fewer state transitions = less latency jitter
More consistent clocks = smoother frametimes (especially in games)
The CPU behaves more “locked in” instead of constantly ramping up/down

So yes—in certain workloads (gaming, real-time tasks) this can feel better.
But here’s the catch

This setup also:

Delays responsiveness to sudden load spikes
Can reduce peak performance bursts (Turbo Boost may react slower)
May increase power usage or heat in some scenarios

For real-time audio and low DPC latency, your 95% / 95% setup makes sense because you’re effectively:
Reducing CPU state transitions (fewer C-state jumps)
Keeping cores more “ready” instead of dipping into deeper idle states
Avoiding latency spikes caused by wake-up delays

[uOpt]

You realize that this means that the CPU won't get into gear for an eternity when you put partial to high but not highest load on it?

That intermediate amount of load is what music production outside of benchmarking is made from.

[Pictus]

You realize that this means that the CPU won't get into gear for an eternity when you put partial to high but not highest load on it?

That intermediate amount of load is what music production outside of benchmarking is made from.

Did you tested in your PC and got worst results?
Because here and many others, they work very well.
If you get worse results, it will be the first case I've heard about.

[lfm]

You realize that this means that the CPU won't get into gear for an eternity when you put partial to high but not highest load on it?

That intermediate amount of load is what music production outside of benchmarking is made from.

I'm like a parrot over this....

Freeze, freeze, freeze tracks!!!!

You don't need to process entire mix in realtime...use a daw that this is seriously simple to do, like one click to freeze and free resources, and one click to restore, if needing to change something....most daws are a bit cumbersome over this, I find Cakewalk/Sonar the best still....

[Pictus]

https://ctfmon.vercel.app/



TabSvc.dll changed to anything else will lead to disabling volume slider being shown as an overlay.
Without CTFMON the Japanese, Chinese and alike languages will not work and the Win key
may not work and this stuff https://www.thewindowsclub.com/use-new- ... windows-11
For me it is not a problem as I also disable the Clipboard User Service(cbdhsvc).