Q10 Pro keeps defaulting to 1080i

[Bones]

I got my Harmony Ultimate home to sync with my JVC  790r, Yamaha receiver and the Q10 pro but every time  I turn them on at once, the video keeps resetting back to 1080i on the Q10.  I assuming it might be because the JVC takes 10 seconds to turn on. I can adjust the delay in the turn on for the Q10 but that will add a delay every time I switch inputs. How can I get it to stick to the resolution I want?

[stl]

Try to turn off Auto HDMI adaptation in settings

[Bones]

Try to turn off Auto HDMI adaptation in settings

That isnt turned on

[cch]

Try to turn on Q10 Pro first before anything else.

[pcristi]

@Bones
Try this:
Harmony 600/650/700
Press and keep help on Harmony remote for get advanced delay fixing mode
https://support.myharmony.com/en-us/adjusting-a-devices-power-on-delay

Harmony Ultimate, Home advanced delay fixing can get direct from menu
https://support.myharmony.com/en-us/adjusting-a-devices-input-delay

Select JVC  790r device, Change Delay, Power On Delay and set 10 sec delay or more if need.
On Activity set power on order
JVC DLA-X790R
Yamaha
HiMedia

Possible Yamaha need also adjusted power on delay.
 

[Bones]

@Bones
Try this:
Harmony 600/650/700
Press and keep help on Harmony remote for get advanced delay fixing mode
https://support.myharmony.com/en-us/adjusting-a-devices-power-on-delay

Harmony Ultimate, Home advanced delay fixing can get direct from menu
https://support.myharmony.com/en-us/adjusting-a-devices-input-delay

Select JVC  790r device, Change Delay, Power On Delay and set 10 sec delay or more if need.
On Activity set power on order
JVC DLA-X790R
Yamaha
HiMedia

Possible Yamaha need also adjusted power on delay.

I will try this, too bad the JVC take 30 seconds to power up as it is.

[Mount81]

So what's the exact resolution for this problem (the descriptions are confusing) in a nutshell?

Do we need to turn on the Box at first or rather the display/AVR?