When playing games or streaming videos I experience a spike that happens at least once or so a minute. I just almost completely lose any speed I just had, and after a few seconds it goes back up. Other devices on my network experience no connectivity issues. Via both wireless and wired connections I not experience any issues. Only on one computer are their issues. I've tried two different wireless adapters for the computer, both of which experienced the same issues despite working fine on other computers.
The computer in discussion is a custom built computer. Is there anyway to diagnos what is causing the problem here? Could it be some hardware problem causing the issue, or is it something else? I don't know how to troubleshoot such a problem once I've eliminated the possibility that the network or connection device is not at fault.