Hi Zackary,
Thank you for taking the time to review my PingPlotter data and for your detailed explanation.
I would like to add some context to my setup. My internet connection is running in bridge mode because I also have IPTV services from my ISP. The tests were performed under idle conditions — there was no network activity at the time (no one was using Wi-Fi or watching TV).
I understand your explanation regarding intermediate hops and ICMP rate limiting. I will also verify the exact Valve server IP I’m connecting to in-game and consider testing directly to the ISP edge router as you suggested.
Thanks again for your help and guidance.
Best regards,
Przemysław