Not too happy with this workaround but it is working for me with how I used my HTPC.
As long as whatever video components are on and set to the correct inputs before you bring the PC out of standby you won't experience this issue. It was a simple solution for me, I just took powering on my HTPC out of my Harmony startup loop and just created a power on button for the PC in the HTPC activity. After all the components start up I bring the PC out of standby. Only major problem with this is you cannot change the inputs of any of the components without putting the PC back in standby first.
As long as whatever video components are on and set to the correct inputs before you bring the PC out of standby you won't experience this issue. It was a simple solution for me, I just took powering on my HTPC out of my Harmony startup loop and just created a power on button for the PC in the HTPC activity. After all the components start up I bring the PC out of standby. Only major problem with this is you cannot change the inputs of any of the components without putting the PC back in standby first.