Avast definition update frequency

How often does Avast (free) run a check for updates to its virus definitions? Couple of times I’ve booted up my pc and there hadn’t seemed to have been any update message. I then manually checked for any updates after maybe 10min and that then found and installed them. (This was after emails had been downloaded - I’d have thought Avast would automatically check for new definitions on start up?)

it check for updates when turned on and detect connection…and then evry 240min (default) if it stay on
you also have stream updates that are pushed out evry 5min

(This was after emails had been downloaded - I'd have thought Avast would automatically check for new definitions on start up?)
maybe the VPS was released just after you turned on the comp?

Don’t think it’s checking for updates when initially turned on - I have just booted the pc for first time this morning, Avast loaded and running but there was no update. I waited 5 minutes then did a manual update and it downloaded definition updates. I have Avast set to ‘automatic updates’ and also to enable streaming updates. Hovering the cursor over the Avast icon in the tray always produced the message ‘Everything is good’ but seems there is an unwanted lag in checking for updates. :frowning: