Unity CPU Thread Affinity

I have a question about assigning processor cores to Unity, in particular when building lighting. I'm trying to assign certain threads to Unity, so I do not have all my cores running at 100%. However, whenever I try to use Windows Task Manager to set CPU affinity to specific threads, Unity crashes. I'm used to doing this with UE4 and Adobe Premiere, and this method always works there. So now I'm wondering if there's any safe way to assign threads to Unity?

 

No ideas?

 

Working for me now, as it's the only way to stop Unity killing my machine.
See
https://forum.unity.com/threads/restrict-unity-editor-processor-affinity-via-settings.672703/
https://forum.unity.com/threads/lightmap-baking-with-ryzen-7-1700.642988/#post-4308874