Maybe I am missing something, but if the configuration is in DTS:X pro shouldnt the source material have been mixed in that format, else you will only get a pseudo effect.
Not really, since these are object based encoding...and if u place the speakers at correct angles with respect to the guidelines ...it will work for both Atmos and dtsX .
Only thing during Atmos playback the center height and VOG speaker will not be active ( Bcoz Atmos layout doesn't have it).
If source material is a 5.1 or 2 channel ,then it can be upmixed using either DSU or Neural X or Auro3d Auromatic upmixers based on your prefrence.