setInterval / setTimeout Not consistantly working

I have a page that is a dashboard for several IOT devices. The page auto-refreshes every 10 min. I often leave the page open in my browser for days at a time. When the computer wakes from sleep it takes the network card a few extra seconds to fully wake up, so I added a timer check that adds another 10 seconds if the page has not been refreshed in over 12 min (indicating that is was in sleep mode).

This has been working fine for years. Now suddenly after the computer wakes up 50% of the...

setInterval / setTimeout Not consistantly working WordPress ...