More heavy network traffic leads to network break-down

got my Pinebook Pro few days ago, so complete newbie with Arm64 & Co (including ArchLinux/Manjaro, I'm more of a Fedora user normally).

Anyway, connection over Wifi to my network works (ping etc), but anything slightly heavy (loading a webpage in Firefox or calling pacman to refresh the cache or install a package) leads after a very little while (less than a minute for sure) to a complete breakdown of the whole network, not only for the PBP, but also for any other device, even connected to the LAN or another Wifi.

I had "Enabled Smart Connect - Let the router intelligently select the best 2.4 GHz or 5 GHz WiFi band for your WiFi connections. Smart Connect requires that the 2.4 GHz and 5 GHz WiFi networks use the same WiFi network name (SSID), security options, and password." Having read about issues with the 2.4GHz band at I've switched off this option and give a specific name to the 5GHz network, and started only using this one. BUT this didn't make any difference and I'm a bit at the end of my ideas what I can do.

Perhaps important, the Wifi router is a Nighthawk® X4S R7800 running in AP Mode against another router (TP-Link TL-WDR4300 v1 with OpenWrt 22.03.3 r20028-43d71ad93e / LuCI openwrt-22.03 branch git-22.361.69894-438c598), which is used since years without any issue.

Thanks, Eric
I'm following up this topic on Discord
Just to keep track of my progress somewhere:

1. it appears that the Nighthawk router reboots under too much load from my PBP
2. dmesg shows

[ 1829.142437] cw2015 4-0062: SoC stuck @0%, resetting gauge
[ 1846.637729] brcmfmac: brcmf_set_channel: set chanspec 0x100e fail, reason -52
[ 1846.638301] brcmfmac: brcmf_set_channel: set chanspec 0xd022 fail, reason -52
[ 1846.759211] brcmfmac: brcmf_set_channel: set chanspec 0xd026 fail, reason -52
[ 1846.877665] brcmfmac: brcmf_set_channel: set chanspec 0xd02a fail, reason -52
[ 1846.999882] brcmfmac: brcmf_set_channel: set chanspec 0xd02e fail, reason -52

[ 1927.883459] brcmfmac: brcmf_set_channel: set chanspec 0xd080 fail, reason -52
[ 1927.883993] brcmfmac: brcmf_set_channel: set chanspec 0xd084 fail, reason -52
[ 1927.884515] brcmfmac: brcmf_set_channel: set chanspec 0xd088 fail, reason -52
[ 1927.885056] brcmfmac: brcmf_set_channel: set chanspec 0xd08c fail, reason -52
[ 1927.885665] brcmfmac: brcmf_set_channel: set chanspec 0xd090 fail, reason -52
[ 1928.824979] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready


(I don't think the cw2015 is there each time, the rest is common)

Similar reports searching for the set chanspec error:

1. (similar issue on raspi4 but no answer)
2. (few hints, nothing conclusive)
I cross-posted the issue at

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