Not the most experienced network engineer to be honest, and I've kind of hit a wall with this so unsure how to proceed.
Story:
A few months back I upgraded my home connection to FTTP (300/70) and at the same time, took the opportunity to ditch the ISP provided router and went with the Flint 2. Since I've had it, I've been unable to play any online games much, due to experiencing rubberbanding really frequently. Unfortunately I sent back the original ISP router so can't use it to test against. My old connection/router which was something like 40 down 10 up, with an ISP provided router, didn't have this issue whatsoever.
I've tried implementing SQM, (300 down 70 up fibre connection, values in sqm are 0 for download and 55000 upload). My results on the waveform bufferbloat test seem to vary, but currently I dont see any latency on my upload speed, just the download where I'm seeing around +21ms. I've used PingPlotter to have a look at what's going on, and I'm starting to think maybe it's an ISP issue, but feeling a bit lost.
It looks like the PC is connected to the router over Wi-Fi, and there is some latency fluctuation on the local link. Since we don’t see clear packet loss in what was shared, it may or may not be related to the in-game issue.
There appears to be a significant latency increase around ~10 hops, but we’ll need the complete trace/results to confirm what happens after that point.
Please also verify:
Are you tracing the actual game server address? The current chart appears to be targeting a pingplotter.com (US) address rather than a UK-based destination. If possible, trace the game server and share those results.
If you’re currently on Wi-Fi, please make sure you are using 5GHz instead of 2.4Ghz.
If possible, please run the same test over a wired Ethernet connection for comparison.
Check for Wi-Fi channel congestion (e.g., macOS Wireless Diagnostics) and, if needed, try setting the router to a less crowded channel/band.
Also another thing can be the use of tunnels, vpns or even multi tunnels can also cause a higher ping due to the complexity, pppoe can also affect it.
This is due to for sqm it cannot track both interfaces, wan will cause effects on wgclient, and vice versa wgclient on wan, the solution is to put everything in a ifb (virtual interface), I don't know if the gl software does that.
for me I run a double vpn on pure OpenWrt but I get around 30ms or higher without ifbs, but for me it is fine over wifi I do not game and it is only serving as another layer to protect my phone connection over wifi.
