I have built a new image from the current master branch (commit 57f2c72505) for my TP-Link Archer AX23 v1. and noticed that ssh connection was lagging and everything felt like I was connected to heavily loaded system (or an old RPi 2).
What was even more surprising, it looked like the system was dropping (some) traffic. Running ping to my another router connected via wireguard VPN had from 5 to 15% packet drop.
My previous image was built from commit 735efbfb7c (I wanted to compare to the latest release v23.05.5 but could not build it).
I noticed the original one used 5.x kernel, while the new one uses 6.x kernel, but apart from that did not really try to make sense out of it.
Are there any know issue on the new kernel / OpenWRT version, related to ramips / MT7621 / TP-Link Archer AX23 v1?
Just to add more info:
I built v23.05 and it worked fine. No lag.
Then tested v24.10, which lagged. The lag is perceived on network connection which passes or terminates at the router.
Connecting to the router via ssh and just pressing and holding a key shows the delayed and inconsistent response.
The same happens when running a interactive remote desktop from one machine to another through the router on local network.
It looks like something related to network is not working correctly in kernel 6.x on ramips / MT7621 / TP-Link Archer AX23 v1.
Can confirm i experianced this too, ended up downgrading from snapshot to 23.05.5 like you.
Giving a bump to the topic, just by saying that the current master branch (d5545a9595) still exhibits the same behavior.
Any ideas what might be the culprit (most likely in the new kernel) are welcome.