...\BrowserAutomationStudio\release"ScriptName"\appslocal\e3b0c442\SID505939e4\engine\prof
Check this folder for temporary profiles. They should be deleted after finishing work.
I have the same issue. BAS not using more CPU or Memory if I increase the numbers of threads.
But when I run another instance of BAS, then both BAS instance using more CPU and Memory. Did you find any solution? @mondtram@support@Fox