4. Tips & tweaks for reducing DPC latency

  1. Update your drivers (especially audio, network LAN, WiFi, Bluetooth, TV tuner).
  2. Disable unused components like LAN, onboard audio card, Bluetooth etc.
  3. Disable any motherboard/CPU monitors that autostart with Windows (like GigaByte EasyTune, ASUS AI Probe and so on)

What is a normal DPC Latency?

DPC Latencies should stay below 1000 us, good around 300 us, perfect around 100 us and anything below that is just a bonus that you wont recognize at even the lowest buffer settings. The bigger your buffer the bigger the DPC latencies can be without causing dropouts.

How do I fix NDIS latency?

Windows 10: High DPC latency (ndis. sys)

  1. Updating drivers.
  2. Changing the power plan.
  3. Disabling the dynamic ticking.
  4. Updating the graphics cards drivers.
  5. Disabling Firewall.
  6. Disabling IPv6.
  7. Uninstalling Bonjour.
  8. Disabling Energy Efficient Ethernet.

What is causing DPC latency?

DPC (Deferred Procedure Call) is the operation that Windows uses to assign a priority to processes/drivers that run at the same time in the same system. A common cause for DPC latency is out of date device drivers and Windows processes that are not optimised correctly.

How long should I run LatencyMon?

LatencyMon is straightforward to use. Just launch the program, click the “Start button”, then play some audio and confirm that you’re getting dropouts. (Or, if you’re just looking for more general performance-related information, simply leave LatencyMon running for maybe five minutes.)

What does high DPC latency mean?

When you have high DPC latency on Windows, your computer’s audio drivers (either built-in system soundcards or external audio interfaces) won’t respond in time. This causes clicks, pops, distortion, and dropouts. In some cases, DPC latency can also cause a BSOD (Blue Screen of Death).

What is PC DPC?

DPC stands for Deferred Procedure Call. In its purest form, it is the part of your Windows system that handles driver efficiency. If a driver takes longer than usual to process, it may prevent other drivers from being processed in time (latency).

How do I disable ACPI sys?

Go to Device Manager and disable (not uninstall) ACPI Compliant Control Method Battery.

How do I check my DPC?

You can find your DPC by taking a look at the external wall. Look down at ground level and look up about 6 inches or so up the wall. Somewhere around here you will see a thin black line of either slate or plastic running horizontally across the brick work. This is your DPC.

How do you test for LatencyMon?

What is ISR count LatencyMon?

Latest version: LatencyMon v 7.20 LatencyMon checks if a system running Windows is suitable for processing real-time audio and other tasks. LatencyMon analyzes the possible causes of buffer underruns by measuring kernel timer latencies and reporting DPC and ISR execution times as well as hard pagefaults.