@Oli77 I downloaded the older version from their website, I don't have the link at the moment, I am sure you can find it on google.

@Tony Thank you, after downgrading firmware to 200725, problem solved, pretty sure it is the firmware issue So please do not upgrade your firmware unless you have issues

Recently the network speed suddenly drop to 5-10 Mbps, but test on deco client it shows 50Mbps, and plug laptop directly to cable before deco, it is 50Mbps as well. When I touch main deco it is...