I do not think this is a good behavior of antivirus program.
Please check if the problem exists during clean boot and in the safe mode.
Tell the result.
BTW, please read : https://robert.ocallahan.org/2017/01/disable-your-antivirus-software-except.html
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.