well cause of the process poping up which cause me to come here, which in turn made me read all the link and stuff in here, I manage to fix the issue I was having with cortana and com surrogate both eating 8~10% each every time startmenu was opened.
One of those links said something about doing diagnostic startup in msconfig, so i did upon reboot cortana was only use .02% when start menu was open, I went back to msconfig and put back normal startup and reboot and startmenu and cortana are still behaving and only using .02% usage when start menu is open.
First time in 3+ months startmenu has not cuased cortana and com surrogate to eat 8~10% usage each., which good thing I Was gona uninstall avast to see if it avast causing, but seeing booting up into safe mode dont even start avast and startmenu and cortana where behaving correctly, I didnt have to if i did uninstall avast i might tried bit defender again.
So avast silent installing and starting to run proc turn out to be good thing for me, go fiqure