What could be causing intermittent internet connectivity on my computer?
I have a computer that experiences frequent and regular internet lag, even though other devices on the same network do not have this issue. The lag does not affect online gaming or voice chat applications, but it affects web browsing and other internet activities. The lag occurs in short bursts, followed by a long pause of about 20 seconds. I use an ethernet cable to connect to the internet, and my current speed test shows 80 Mbps download and 10 Mbps upload. How can I diagnose and fix this problem?