@Deano - pardon me for inquiring, but just to be clear, if the problem with the Surround Sound exists, it will always exist on those programs that were recorded before changing the setting on affected Roku devices. You will need to record something new after changing the setting to see if it works. The setting will have no effect on previously recorded content.
I believe you said you have a Legacy Tablo. I’m not sure this is the solution for that device, but @TabloTV would know better than me. I wasn’t aware of this affecting the Legacy device, but that could have changed with the latest 2.2.58 firmware update.
If you have questions about how enabling Audio Compatibility Mode will affect old and new recordings, please consult the chart below.
