You may find more a benefit to your 7.1 if the sides were more directly to the side or slightly in front.

I had near 20ft of dead air space between my side surrounds, and my LR surround is almost like a very wide front, as the system is corner situated. The rear center speaker helped fill in the gap nicely, especially during action shots in movies. I now notice sounds from LR, RR and RC are much more defined and yet blend better during softer surround effects.


Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70