MT7603E and MT76x2E are known to do that. You might consider padavan firmware as it has rock solid wireless performance and hardware offload even for wireless . It's much better with 7615 and 7915 If You consider upgrade
Same here : I have two R6220 (MT7621ST, MT7603E and MT76x2E) used as AP. I use an android smartphone as client, on 5GHz. No problem whatsoever.
Try to reset to default values, and do minimal settings.
Try a master snapshot, the kernel has switched to 5.10 and wifi drivers are uptodate.
Are you using mesh, 802.11r transition or anything else ?
Is there channel overlapping between all these APs ?
Yes you can try IPQ4019 devices if you are still unhappy.
If you check the thread you will see multiple report of stability issue.
The most critical I am experiencing also are:
a) Sometime on connect the interface cannot deliver traffic to the lan bridge, reconnect required
b) Loss of lan traffic for 1-2 minutes every now and then, restores automatically
c) After some days of operation unable to connect to 5Ghz radio, reboot required
d) Sporadic packet loss/speed drop
It may sounds weird to you, but with the master snapshot based on kernel 5.10, I have better performance on 5GHz than while using 21.02. File transfers (LAN to wifi) can sustain 55 MB/s which is quite impressive for such hardware.
I have attempted to use some MT7621 router as access points
and they as of yet haven't lived up to worth using
I have ended up tracking it down to the the switch
as it's wifi seemed to be having dropouts
but then my desktops / wired having dropouts that do not go through the MT7621
in the end I turn off the wifi & found that just having a device plugged into my network
cased problems for my wired clients
me needing to reload pages that just stopped
this was with v2102 & master as of 2 weeks ago
the only thing I can pit it down to is the DSA stuff not linking all the ports linked
but i have given up for the time & gone back to my older access points
just a note didn't not have this problem with a R6220 on V19
1 - Reset box
2 - Start & modify IP LAN to be in the same network as your router with the correct gateway and the DNS of this one or 220.127.116.11 (google)
3 - Program the 5 GHz WIFI with a channel without DFS like 36
WIFI should now be accessible by customers
4 - Put a WIFI key and try again
If everything works you can then try with the auto channel which will then use the DFS
For the DSA you can bypass all WAN and LAN ports which will give you 5 available ports
A question: I don't understand why you need 4 * AP connected in LAN on your router because only one is enough?
For others, it will suffice to make OpenWrt AP master <---- WIFI ----> OpenWrt client
He hasn't described his whole configuration and the scenario of use for the APs. So let's assume he needs all of them, everything is possible. At work I have 3 APs, each in a different building: they are all needed