I've just recently bought Asus RT-AX53U and flashed OpenWrt on it. I was able to do everything I needed like setting up VLANs for guests and IoT devices.
There is one outstanding issue I have troubles with. It happens on both wired connection via Ethernet and Wifi. The latency randomly spikes to values around 1500ms. This complicates online gaming and video calls a lot.
Since it's happening on wired connection as well, I think the issue is with the router. I've tried SQM but that didn't help at all.
What application are you using or measuring the RTT?
If you install mtr on your OpenWrt router (opkg update ; opkg install mtr) and run a speedtest against , say 184.108.40.206"
mtr -ezb4 220.127.116.11
this is interactive mode, you can also run it for a predeterimined number of probes, e.g. 100:
mtr -ezb4w -c 100 18.104.22.168
just post the output of the last command to this thread by copy and pasting from the terminal you ran the command in, no need for screenshots of terminal output, after copying select the newly added text and click the preformatted text button "</>".
BTW, according to these results you are nearest to London and Paris but not all that close to these either...
I'm not exactly sure what to look for. I checked the system logs in OpenWrt but haven't found anything suspicious.
The issue seems similar to this one, but I'm using more recent modem Compal CH7465VF. I've tried to change the cable that is connected to WAN port on my router and also tried different port on the modem. No effect.
I didn't have this issue before I had the router (I was using the modem in router mode). I also think the problem wasn't present when I used the Asus router for about a week with AsusWrt. I've tried to go back to it from OpenWrt today to confirm, but wasn't able to (router firmware restoration failed). So it seems I'm stuck with the router running OpenWrt with this issue or I could go back to using ISP modem in router mode again.
Maybe let's start with posting the output of ifconfig here which will show some error counters that likely are zero, but if we would see errors there that could finger the ethernet link to the cable modem.
If I understand correctly, you can get some information about the DOCSIS link (Router >> Cable Modem > Connection) in the compal and post it here, these could as well be errors in the DOCSIS segment...
Yeah I checked there but the GUI is really limited with hardly any useful information.
I asked about this issue on Vodafone forum as well and was recommended to try to change the modem piece for piece. I've had it for almost 2 years so maybe the change will help. Apparently, this model had this issue in bridge mode in the past.
So I did a few more tests today before ordering an exchange of Compal modem. To my surprise, the results are different. There are still a few packets lost on the way, but not at the last hop. Also the web ping testing tool is not showing spikes to 1500ms as it did before. I tried to play an online game to test it and I haven't noticed any lags anymore. Nothing really changed so I have no idea why it's working now.