I am experiencing intermittent severe latency spikes and rubber-banding on my Plusnet Full Fibre connection. My normal latency is around 21–23 ms, but it intermittently rises significantly and causes real-time online games to freeze and rubber band.
I have carried out extensive troubleshooting at my own expense. I tested the installed Ethernet wall connection with an RJ45 network tester and all eight conductors pass correctly. I also completely bypassed the wall wiring with a separate 10 meter Cat6 cable and the same issue occurred.
The issue has also been experienced on more than one wired device in the household, so it is not isolated to one PC or network adapter.
I have now replaced my ASUS AX6000 router with a brand-new ASUS ROG Strix GS-BE7200 and used the new Ethernet cable supplied with it between the Openreach ONT and router. The new router was configured from scratch. Despite this, the high latency and rubber-banding have returned.
I have been using PingPlotter and recorded large latency spikes to external destinations such as 1.1.1.1, so the problem is not limited to one game server. Normal download speeds can still be achieved, so this appears to be an intermittent latency/jitter issue rather than simply a throughput problem.
Given the amount of internal equipment and cabling I have now eliminated, I would like Plusnet to investigate the FTTP connection, ONT and network side for intermittent errors, packet loss, latency/jitter or optical issues, and escalate to Openreach if appropriate.
