Example: Captain America: Winter Soldier, downtown fight scene

All of the sounds are coming from the front. There’s little left/to right or surround ambiance from the Arc Ultra. I was expecting sense of movement but it's all just coming straight at me, sounds like the fight’s happening in a closet. Other scenes in this movie we can hear the surrounds kick in and get plenty of separation, really wide soundstage.

Am I at the mercy of the mix? Is this a decoding or software problem with Sonos? Or a hardware limitation with this soundbar.

100” screen on a 25’ wall

Apple Stream 4K/ATMOS on Formovie Premium Projecter out via HDMI to:

Arc Ultra

Sub 4

2x ERA 300s