Deco auto Neogatiation is quite unstable sometimes link drops to 10mbps even cable are CAT6, this makes network un-useable until i need to reboot or replug connector once a week. This issue happen after every 1-2 week of continuous use without reboot. Also, one of Deco M5 continuous dropping link to 100mbps after 1hour of reboot. Sometimes wan(port1) drop other times lan(port2) drop.

The black one - Mac Air [wireless 5ghz]

The white one - Raspberry pi 4 [wired]