I changed the layout to Top middle and rear heights. Good level of improvements with panning and separations. Later i will reduce the height of my mains and surrounds which are currently installed above ear levels
I have a slab in front so cant install the speakers at front height position. Also auro 3D seems to be dead. We don't get any contents that is released in auro 3D. It offers the best immersive experience for sure but sadly no contents available.