My setup:
Arc
Sub (gen 3)
2 x one SL’s
With a true play on.
The right surround is much louder than the left.
True playoff. Balanced sound.
Swapped one SL's around and also done true play tuning at least 8 times.
Regardless of this, it’s still the same!!!
Surrounds are in a square room, symmetrical and equidistant to seating location with no obstructions!
Sonos customer support doesn’t seem to know?
Anyone else?