@Kevin_Z 

I have a similar issue after upgrading to version 1.4.0 Build 20191223 Rel. 38921.

The wifi devices are not disconnecting, but te internet is moving really really slow. 

It has a great lag and packets seem to be lost.

It's not the ISP connection. It all worked fine before the firmware upgrade.

I would really appreciate a procedure to rollback to version 1.3.1 .

If not, I will need to return the product as faulty.

@Kevin_Z 

Me too, when I update deco I also have this situation. I connected pppoe. and the internet is fine. help me

@Kevin_Z 

I have the exact same issue as OP, and also happened right after upgrading to 1.4.0. 

1) 2 have 2 deco unit, but I didn't pay attention to the led status. What I can see is that both nodes are connected through my deco app

2) Internet connection type is PPPOE, with a vlan configured for Malaysia - TM Unifi

3) connect to network, yes. Internet is a hit or miss, I normally notice a burst in speed, then it's like my device is being throttle or somehow the mesh network is unsure which node should serve me. 

4) didn't have any computer with lan port so I can't try that. Speed test within the app shows 100mbps down and 50mbps up, which is the speed that I should get

5) all of these are disabled and it is still the same. 

I also did some analysing myself and I notice both of my nodes are using the same channel, along with 2 additional 'unidentified channel'. It could be caused by WiFi congestion or conflict where the WiFi channel is same as the back link that is used among mesh nodes. 

I also disabled and removed one of my mesh node. But that did not help at all. It led me to believe that it could either be done kind of feature that was mistakenly configured and kept throttling and trying to block my devices from network access. 

Lastly, the WiFi behavior is not exclusive to one single device, so device within the same wifi network (I tested with 3 of them) Had the same behavior

@Kevin_Z 

I have the same problem after the update. Internet connection on wifi connected devices became slow and unstable. It happened after the firmware update, some of my smarthome devices became unresponsive or lagging. The app prompted me to update the firmware few days already, so i finally did it 2 days ago. Now I am regretting. Did you guys not test the new firmware?. To answer your question:

1. Green

2. PPoE. VLAN/ IPTV enabled

3. Internet acces is slow and unstable on wifi. Maximum speed if directly connected and tested using the Deco app. Maximum speed on wifi devices before the update now cannot even reach half of the speed on speedtest, sometimes dropped. 

4. The wifi from Deco is the problem.

5. Done - same output. 

Please provide solution to this problem or rollback to previous firmware. It is annoying to wait 1 minute for videos to start streaming when it was streaming instataneously previously.  Thank you. 

@Kevin_Z i m also facing the same issue , plz help me to fix this firmware and how to downgrade to previous firmware , its very annoying have to restart it frequently in order to access the internet.

thanks

@Kevin_Z  hi. I am having connectivity issues

1.4.4 build 20200221 rel. 65392 

I am using deco m5 

Signals are getting disconnected and when trying to reconnect it says wrong password. Even if we did not change the password. Even if i am right beside the main deco unit.