We run a medium sized afterschool computercafe for kids consisting of 24 computers. We have a problem we cant detect. When we update fortnite, windows updates, or other large updates, we set all machines to download. We then according to our ISP "max out" our network, a 100/100 connection. Then downloading huge updates, computers on our network seemingly disconnect from the internet. The broadband symbol in the tray turns to the yellow "warning sign", and internet access seems limeted.
We have some 100/100mbit switches, and a router supplyed by the ISP. We have had to guys from the ISP looking at our network but they have no explanation. Can you guys help us out, although we know its pretty vague information we give?
Router: cisco 890 series router
3 Switches: 24+2g-Port web smart gigabit ethernet switch (possibly d-link but unnamed)