2.4Ghz Ping behavior on lan?

Device: Buffalo WXR-2533DHP

Firmware: OpenWrt 24.10.5 r29087-d9c5716d1d / LuCI openwrt-24.10 branch 26.063.06254~c01201f

I just installed it and I was setting it up, when I decided to check some ping behavior on the 2.4Ghz wifi and I found this behavior:

This is not related with the load on the router or the wireless it self, in fact, i am the only one using the internet/wifi at home right now, no uploads, no downloads, nothing…

The ping is down against a zigbee gateway, and the vacumm robot.

Other packages installed that might be relevant:

root@OpenWrt:~# opkg list-installed | egrep -i ath
ath10k-board-qca988x - 20241110-r2
ath10k-board-qca99x0 - 20241110-r2
ath10k-firmware-qca988x - 20241110-r2
ath10k-firmware-qca99x0-ct - 2020.11.08-r1
kmod-ath - 6.6.119.6.12.61-r1
kmod-ath10k-ct - 6.6.119.2024.07.30~ac71b14d-r2
ucode-mod-math - 2025.07.18~3f64c808-r1

The firmware is no NSS.

I can’t explain the ping behavior, I was not expecting it.

Any idea?

WiFi power saving?

Good point, I didn't think about it.

Is there any way to double check it?

I didn’t research about it yet, maybe you have an answer. just asking.