If you're on Windows OS have you tried opening Task manager and right clicking telling it to force use on multiple cores?
https://www.makeuseof.com/how-to-manually-allocate-cpu-cores-windows-10/
If you're on Windows OS have you tried opening Task manager and right clicking telling it to force use on multiple cores?
https://www.makeuseof.com/how-to-manually-allocate-cpu-cores-windows-10/