This is an issue that I have been dealing with for months now. I have a desktop with a wired connection that experiences sustained ping spikes every few seconds. In the past, the ping was excellent; it only happened at specific times, and now it happens all the time. I have contacted my isp and received a new router, but it has not fixed the issue. I have sent pings to hop 1 and hop 2 to find no underlying concerns. The photo below is a visual of my issue.