CPU spikes with Intel i7 4790K/6700K Processors (Win)

  • Live Versions: 9
  • Operating System: Win

Symptom

Live's CPU meter spikes to high values, resulting in dropouts, crackles or glitches in audio. None of the solutions in the article on how to reduce CPU load in Live fix the issue.

Cause

CPU throttling may need to be disabled for certain computers running Intel i7 4790K or 6700K chips.

Also called "dynamic frequency scaling," CPU throttling is commonly used to slow down the computer whenever possible to use less energy and conserve battery. It is also used to make the system quieter. At slower speed the CPU chip generates less heat and the fan, which is typically the noisiest component in a computer, can be made to run slower. However this setting may adversely affect the performance of the computer, especially when performing intensive tasks like audio processing or gaming.

Solution

Open Control panel and go to Power Options -> Change Plan Setting -> Change Advanced Plan Setting -> Processor Power Management-> Set Minimum Processor State to 100%.

Processor_Power_Management_Windows_7.png

Note: If this setting doesn't show up automatically in Power Options, then you may need to modify the registry to make it display. Please follow the instructions in this external resource to modify the registry and to disable CPU Throttling

Further Troubleshooting

In case performance is still not improved, other i7 users have reported that disabling hyperthreading helped instead. Please follow the instructions in this external resource to disable hyperthreading on i7 chips