Just wanted to report in. For years my Arc system (two surrounds and a sub) has been used with an older LG OLED without the newer eARC and I was getting Dolby Atmos “lite.” Yesterday I updated to the new LG C3 which has the new HTML 2.1 eARC and am now getting the full Atmos. My word, the sound quality is at another level. I simply can’t believe how good it is.
I didn’t know what I was missing.