@Mmilan 

 

Check quality of signal between Satellite and Main Decos. You can find it under Signal Source for Satellite Deco, in Deco app. 

In this example, signal quality from Satellite M9 to Main M9 is very good. You should see one 2.4GHz band and two 5GHz bands, like on picture, because M9 has dedicated 5GHz backhaul.

If you see signal quality way worse, and/or less than three bands shown, you'll need to move Satellite M9 closer to Main Deco and see if disconnections go away.

 

For test purposes, place Satellite Deco in the same room as Main Deco, about 3-4 meters from it. Then, check again signal quality and see if disconnects continue. 

 

 

 

 

The signal is 2 bars in my case. There is only one wall separating the 2 units. If this is the m9 functioning as intended I am going to have to return it and go back to using my previous reputed because this is unacceptable.

@Mmilan 

 

I suggest you run this test: bring Satellite Deco to same room as Main Deco, place them about 3-4 meters away from each other, and also check signal quality in Deco app after you power on Satellite Deco in the same room as Main Deco.

 

Leave them running for few hours and check if disconnects still happen. That will help to figure if you have defective Deco unit(s), or there is something else going on in your house. If disconnects do happen with this setup, something must be wrong with Deco units.

 

If disconnects ceased, move Satellite M9 a bit further away from Main, test for disconnects again. Keep moving Satellite M9 till you find sweet spot where disconnects still don't happen, but WiFi coverage for your house is good. If such location does not exist, or you are not interested in spending time to troubleshoot, just return Deco set.