@RetiredInFl 

Try disabling beamforming (bottom right of Deco app > Advanced > Beamforming in the Deco app. The L/R Deco may not trying to increase the signal toward that camera.

Set that one camera up as a high priority (tap on device name in device list, enable the ticker for high priority), see if the Deco will connect the camera to the garage Deco for faster performance.

To answer your question, you are not able to force a device to a Deco unit.

Tony wrote

@RetiredInFl 

 

Try disabling beamforming (bottom right of Deco app > Advanced > Beamforming in the Deco app. The L/R Deco may not trying to increase the signal toward that camera.

 

Set that one camera up as a high priority (tap on device name in device list, enable the ticker for high priority), see if the Deco will connect the camera to the garage Deco for faster performance.

 

To answer your question, you are not able to force a device to a Deco unit.

Don't have the High Priority option.  Maybe because I am in access point mode?  I turned off beamforming and will see what happens. 

@RetiredInFl 

Yes, being in AP mode kills a majority of the router features.

I have the exact same dilemma,

Anyone found a way to resolve it?

I have the same problem. 
My AV receiver and TV keep connecting to the office Deco two floors up. And then complain they don't have enough signal. Spotify connect keeps faltering.

A really annoying problem that makes an otherwise good product virtually useless.

@Thijs @Tony  that's probably why they didn't update the M9 to the 1.3.1 firmware that shows these connections. :)  It probably caused too many people to question the same thing. I sold my M5's for M9's for the greater speed and noted that "feature" was missing since I've been on 1.3.0 from last august and they seemed to have abandoned the M9 as far as firmwaupdates.  

@RetiredInFl 

I can see that sentiment, given the release patterns across all the Decos. For firmware release dates those are hard to say for sure as sometimes a last-minute bugs would be found causing further delay. The info I have so far is that 1.4.0 will be the next update for the M9, it is just a matter of when HQ will make that available. 

@Tony Well, checked the M9 support section and it seems the "Rev 2" M9 Plus has recent updates but my "Rev 1.8" has been left behind.  

@RetiredInFl 

V2 came out later than the V1, but neither has UI over the other.

@RetiredInFl 

Reboot the DECO in your L/R. When your camera connects to your Garage DECO, untick the MESH option. That would make your camera stay on that DECO node (Garage). Once camera is connected and MESH option unticked. Turn on and refresh your L/R Deco node.

This worked for me when I tried making Chromecast stick to a specific Deco node. Hope this helps