Full System Scan & Clearing Browser History,Etc.

I do a full system scan once a week and wondered if it is helpful and/or necessary to clear my browser history before each full system scan.  I have always done that with my old discarded computer that had IE9. I now have a new (one month old) computer with Windows 10 IE11 and Edge. Is the scan faster when history is deleted? How often should I do a Disk cleanup and should that be done before each full system scan? I have also been doing Norton Performance : Files and Disk Optimization as well as Norton Insight Scan once a week before each full system scan. 

Holly

HP Envy m7 Notebook

Installed Ram:16.0 GB 

64 bit operating system, x64 based processor