Everything was fine until yesterday when I randomly started getting to 200ms+ every 10-30seconds (over ethernet) for 1 second. I've tried troubleshooting (reset modem and router, replug cables, restart, try different cables, different devices) but it...

It has only happened in the past day that these ping spikes happen every 10-30 seconds. It makes multiplayer fps games unplayable. Download speed is fine but ms goes to 200 and back down in 1 second which causes the game to lag/teleport for a second....