Hello,
avast program folder (program, virus definition folder): C:\Program Files\AVAST Software
avast data folder (logs/configuration/...): C:\ProgramData\AVAST Software
when avast updates drivers, they are also updated in Windows folder: C:\Windows\system32\drivers
I'm also not sure if your time freeze software don't revert also settings in registry, avast uses: HKEY_LOCAL_MACHINE\Software\AVAST Software
what about DeepFreeze time freeze software? I think it works well with Avast.
-pk