Wifi client issue but only on new soft

Installing and Using OpenWrt Network and Wireless Configuration
1

Hello. I've just migrated the old Archer C2 v1 to OpenWRT and faced a weird issue.
The migration version is pre-prepared from OpenWrt wiki:

OpenWrt 19.07.1 r10911-c155900f66 / LuCI openwrt-19.07 branch git-20.029.45734-adbbd5c

In this version I can connect in wifi client mode with no issues but after updating over openwrt-22.03.5-ramips-mt7620-tplink_archer-c2-v1-squashfs-sysupgrade.bin (latest) wifi client mode loose 99% of packets and 1% have horrible pings

From 172.16.1.201 icmp_seq=233 Destination Host Unreachable
From 172.16.1.201 icmp_seq=234 Destination Host Unreachable
From 172.16.1.201 icmp_seq=235 Destination Host Unreachable
From 172.16.1.201 icmp_seq=239 Destination Host Unreachable
From 172.16.1.201 icmp_seq=240 Destination Host Unreachable
64 bytes from 172.16.2.10: icmp_seq=142 ttl=64 time=102126 ms
64 bytes from 172.16.2.10: icmp_seq=143 ttl=64 time=105535 ms
64 bytes from 172.16.2.10: icmp_seq=144 ttl=64 time=107748 ms
64 bytes from 172.16.2.10: icmp_seq=145 ttl=64 time=109251 ms
64 bytes from 172.16.2.10: icmp_seq=173 ttl=64 time=124374 ms
64 bytes from 172.16.2.10: icmp_seq=175 ttl=64 time=122360 ms
64 bytes from 172.16.2.10: icmp_seq=176 ttl=64 time=121631 ms
64 bytes from 172.16.2.10: icmp_seq=177 ttl=64 time=121217 ms
64 bytes from 172.16.2.10: icmp_seq=178 ttl=64 time=127602 ms
64 bytes from 172.16.2.10: icmp_seq=179 ttl=64 time=128124 ms
64 bytes from 172.16.2.10: icmp_seq=180 ttl=64 time=128481 ms
64 bytes from 172.16.2.10: icmp_seq=181 ttl=64 time=136619 ms
64 bytes from 172.16.2.10: icmp_seq=182 ttl=64 time=147191 ms

In the logs, I didn't find anything useful. Both versions are factory reset and configured the same way. I've retried this 4 times and always have the same outcome.
What I've noticed is:
The old version makes a connection like this:

RX/TX Rate
325.0 Mbit/s, 80MHz, VHT-MCS 7, VHT-NSS 1, Short GI
195.0 Mbit/s, 80MHz, VHT-MCS 4, VHT-NSS 1, Short GI

The latest version looks like this and RX Rate never succeeds in negotiating higher:

6.0 Mbit/s, 20MHz, VHT-MCS 0
175.5 Mbit/s, 80MHz, VHT-MCS 4, VHT-NSS 1

Any advice please what can I do to update it to the latest and make it work?

2

(it's not)
https://firmware-selector.openwrt.org/?version=23.05.4&target=ramips%2Fmt7620&id=tplink_archer-c2-v1

Reset the settings during upgrade.

3

@frollic sorry. I've tested these two vesions - the latest and this which I've pointed have the issue.

[EDIT]
openwrt-23.05.4-ramips-mt7620-tplink_archer-c2-v1-squashfs-sysupgrade.bin works fine but 23.05.3 had this bug too.

4

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