could this be a bug ?

is it only me or cis v5 updates very very frequently ?

Normal interval are every 30 minutes, in case of FP fixing it could be faster.

ok, i understand, what seems strange is that in the summary tab under antivirus section the last update time and hour isn’t always updated properly.

You can check update’s on the CIS logviewer, select “Tasks launched”.
You can open log viewer by opening “view events for AV/FW/D+” en click on the “More” button.