I found that reducing my frame rate to 12 fps (from 24) during preview/playback reduced the CPU crash frequency
Sorry to hear CH crashing so often on your system.
I'd like to ask you more info to try to repeat the problme here.
1) the version of CH you are using and seeing this crash,
2) os build number (go to System Information, and copy/paste version, something like 10.0.18632),
3) the chproj you see this problem (zip entier project folder),
4) steps to see crash (is it happen on preview the scene? or do I need to change frame rate while previewing? etc.).