LJ2005

I recently built an unraid server, and im now running a minecraft server on it. I used the binhex mine craft server template for the docker, and replaced the files with my own. The server itself runs great, but every few minutes everyone ping goes from ~30ms to 700-2000ms, including mine which is strange because im on the same network. My server is plugged into the network with a powerline that should support 1000mb/s. My only idea is that every few minutes there is something interfering with the power lines connection, but i dont know how i would go about checking that. Is there anything else that could be causing this issue?