Sony ST-HT5000 soundbar's connection with subwoofer impacted by Orbi backhaul

Thank you all for your replies. I have been trying out the various options and am happy to report that specifying channel 48 on the 5GHz band on the Orbi, reducing the Transit Power Control to 50% and choosing 5.2GHz, channel 2 on the soundbar for it to communicate with the subwoofer has helped a lot. There is a minor popping sound at times but it is exponentially better and for all practical purposes non-existant when compared to before. Even the issue with the Internet on the Mac crashing and becoming unusable has been resolved (though it is perhaps 70% of what it used to be but at least it works). I did try stepping the Transit Power Control on the Orbi back up to 75% but 50% was better and so I went back down to it.

Now that the issue has been identifed I was thinking of trying out the other channels too. Given that the soundbar is talking to the subwoofer on the 5.2GHz band, is there another channel that you would recommend or is channel 48 my best bet? Are there other options on the Orbi that I should consider toying around with? Currently I have:

Enable 20/40 MHz Coexistence - Enabled

Daisy-Chain Topology, Implicit BEAMFORMING, MU-MIMO and Fast Roaming - Disabled

The 2.4GHz channel is set to Auto and the Transmit Power Control setting for it is at 100%.

Thanks for all the help!