Blender – Intel CPU Fix

Fix to be able to use all cores on an Intel CPU

Issue:

If you run Blender in the background or as service, then it does not use all cores on your Intel CPU.
Maximising your Internet Browser while rendering is sufficient to encounter this issue.

The issue was reproduced with Blender 3.5 and 4.2.
Blender 5.3 does not have this issue any more.

Background:

The Intel 12th Generation and all following have fast Performance cores and slow Efficiency cores.
By default Windows 10 and 11 disable the Performance cores for applications in the background.

An application can tell Windows not to do that.
Unfortunately Blender does not and will not do that in the future.
~~(The dev ticket was closed after a long discussion about pro and cons with the result “better save than sorry, what if someone expects and wants this behaviour”…~~
~~Sorry to say it, but this developer has no experience with rendering in a production…)~~ Edit: It was finally fixed afte 4.5 years! Yeah!

Solution:

Our plugin uses a library of Royal Render to tell Windows that Blender should use all cores all the time.

This is a must-have for a renderfarm (As Blender runs in the background)

Download:

By downloading this software you agree to our freeware EULA.
Download the Blender Fix.