My CLS's are 5.5' from the front wall and 5' from the side walls. Panels are 8.5' apart (center to center) with slight toe in (no more than 2 to 2.5"). They actually worked -- well focused sound stage/center image -- farther apart, but I've added SW800 sub towers and had to move the panels a bit closer together. Listening position ranges from 9 to 11 feet, depending on material and mood. I have a fairly large, asymetrical room so reflections are not a major issue. I suspect they are with your speakers and room (based on the position/dimensions you stated).
Notwithstanding the fact that the Aerius is smaller, I think your speakers need more air, if this is feasible in your room. Best of luck.
Notwithstanding the fact that the Aerius is smaller, I think your speakers need more air, if this is feasible in your room. Best of luck.