I've been experiencing lag spikes for past few weeks now, and I have to admit that it's noticeable and quite annoying, especially when gaming or watching movies. I did run some tests, here are the results - hope it helps.
As you can tell I had bad packet loss, which has been sorted now. Thought that it's the reason for lag spikes, although the problem is still there. More tests below:
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Ping from cmd.
I'm more than happy to run more tests if needed. Please help, as it's getting ridiculous now, ta!
//Edit: Forgot to add: router has been rebooted few times in the past few days - through the web browser and directly at the router. All devices get lag spikes around the house, or even connection drops (PS4). Above tests made while wired. Wireless doesn't help the current situation, it's even worse. Everything was normal few weeks back.