WiFi question
I have a new 2020 iMac. I have a 400mbps WiFi speed account with Charter. Running a Speedtest the iMac shows over 400mbps. THEN an few minutes later the Speedtest shows only 100 or so mbps. I restart the iMac, the Speedtest shows over 400 mbps again. It happens all day.
At the very same time, my MacBook, iPad and iPhone are always showing speeds of 400+
Why does this happen to the iMac
Thanks
iMac 27″, macOS 10.15