Deco M4 Keeps Rebooting - At least 10 times a day !!
My deco keeps restarting at least 10 times a day. I have set it up with a wifi router in Access Point Mode.
Wifi Router --> Lan cable Cat 6 --> Deco Main Hub
What do I do? I am really irritated and trying to find out the issue.
TP-Link Deco M4 Whole Home Mesh Wi-Fi System, Seamless Roaming and Speedy (AC1200)
Welcome to the deco random reboot club.
I've been in this club since I bought these Nov 2020 
There is no end in sight either, it seems to affect multiple models accross the mesh range.
Support seems unable to resolve the issue.
Really disappointed in tp-link, if I had to do it all over again, or if the time comes to upgrade, I'll be looking elsewhere.
Firmware made no difference, it rebooted from the day I got it, with 2 different isp's, different network configurations, router mode directly to ONT, single deco, wired or wireless, AP mode, behind a main router, switched decos, used a new one, changed cabling, changed power supply.
Keeps on randomly rebooting on every version of firmware since 2020, and every config or change I ever tried.
Without knowing exactly what these things are doing, I can only tell you what I have noticed to help. Seems that the deco's are connecting somewhere to check it they are online, if that fails, they throw a hissy fit and reboot or something.
Switching to a different dns helps, 8.8.8.8 and 9.9.9.9 seems to give best results for me. I also found a definite improvement when I increased my TTL on my ISP connection.
But non of these completely resolves the issue for me, I got it down to a single reboot every couple of days, but still a really unacceptable state of this product and support unfortunately 
Thank you for the reply and recommendations.
I know, this is unacceptable. TP Link should acknowledge the issue and push an update to fix it.
You are right when you quoted "Seems that the deco's are connecting somewhere to check it they are online, if that fails, they throw a hissy fit and reboot or something"
Below is what I found on my ISP router page.
So I shall change the last 2 values to 8.8.8.8 and 9.9.9.9 , right?
