Lot of other posts about this. Search for latency spikes or something similar.

Try to disable Mesh for that node.

@realjax https://www.tp-link.com/se/support/download/deco-m9-plus/v1/#Firmware

Surprised that no new thread about new firmware for M9 Plus is started yet. So here it is! Did see V1.4.0 in the app yesterday. Have anyone installed it yet?

They have released 1.2.6 for the m9 now.

Have three M9 in AP-mode. Two of them are cabled and one in the middle without cable. Have IP addresses reserved for them in dhcp-server (ASUS Router RT-AC88U). Browsed through the router log and did...