@MortenWith Check QoS and turn it OFF or set the limit to 1000 Mbps in QoS

Today i was trying to setup IPV6 on my Deco M4 but my Deco got IPV6 address and DNS but could'nt provide IPV6 address and DNS to connected clients and even i tried every options which are available...

@Bugs22 Wireless Backhaul took 30-40 seconds for me after reboot or sometimes 1-2 minutes and Wired Backhaul took around 5-10 seconds to connect after reboot everytime. Yeah you are right (Wired)...

@sternTal Glad to hear. Kindly mark your post as Recommended Solution.

@Utubern You can download the firmware from the link below. https://www.tp-link.com/en/support/download/deco-x60/#Firmware

@sternTal Have you updated your Deco M5 ??