What about exclusions/settings setup for Avast!free 2014.9.0.2016 and Comodo firewall 7.0 (both latest versions)?
Sorry but do not run Comodo 7. Since CIS 6 never ran good in my sys, I kept CIS 5.12.
Avast, now, has one different file that was substituted or replaced for avast.setup
C:\Program files\AVAST Software\Avast\Setup\
instup.exe that would be set up in Comodo as an Installer or Updater. Anyways, any avast! file running should be set as trusted in Comodo.
I knew that CIS 6 also changed and added some files:
C:\Program files\COMODO\COMODO Internet Security\cis.exe
C:\Program files\COMODO\COMODO Internet Security\cmdinstall.exe
C:\Program files\COMODO\COMODO Internet Security\CisTray.exe
C:\Program files\COMODO\COMODO Internet Security\cavscan.exe
C:\Program files\COMODO\COMODO Internet Security\cavwp.exe
C:\Program files\COMODO\COMODO Internet Security\virtkiosk.exe
C:\Program files\COMODO\COMODO Internet Security\cmdvirth.exe
C:\Program files\COMODO\COMODO Internet Security\cmdupd.exe
C:\Program files\COMODO\COMODO Internet Security\cisbf.exe
but I have not tried CIS 7 yet. Also you can just exclude the whole COMODO folder in avast! File System Shield and be done with it.