IMO, the best thing you could do is get rid of AVG Free.
Please note, as you seem quite unaware, having multiple AV on a system is never recommended as there is usually conflict resulting in unexplainable behavior
We also think to have a detection system on incompatible software during the installation of CIS with the next releases in order not to have these kind of problems. Right now we are working on it , will inform you about this.
Please do a warning system and not a hard-block system for incompatible software, as a user I still want to be able to install incompatible software for whatever reasons however I would like alerts that there are incompatible software installed.