Hi and welcome, mopar,
See Technical's excellent explanation of the ini generally, including this question,
here, the VRDB is covered in post # 4.
You'll have to add the RunInterval as a new line in the VRDB section, it's one or many settings for which avast uses its default value if there's not a specific reference to it in the ini.
It's your choice, of course -- but every day or two is probably
way too often to be doing fresh VRDB's - ??
Best,
Mike