You can set the CPU to run multitask with an app_config file. That makes all the cores work on just one task at a time.
Just like SMP was to folding at home. It will greatly cut down the time to do a task to a day or less depending on the CPU and speed and memory speed......
C&P this to your app_config file. Change the nimber 4 (on both lines below where you see the 4) to how many cores/threads you want to use.
To make an app_config file it is best to use NotePad
Open NotePad C&P that info up there to notepad.
Under File, Hit Save as
Choose all files with the drop down right under where you put the name you want.
Now name the file app_config.xml
Now put that file you just made into the www.primegrid.com
You fine that under C: , program data, BOINC, projects, www.primegrid.com
In order to see the program data dir. you will have to show hidden files and folders in windows settings.