Latest TCL Roku TV update causing Plex audio sync issues

I noticed a change recently and did some new tests with mixed results: PLEX on Roku audio issues since latest Roku Ultra update

Looks like my Ultra is working now (both Plex and Roku Media Player) but not my TCL TV - though no indications of any updates on the Roku OS and since RMP is fixed too I don’t think it’s attributed to the recent Plex server update. Anybody else able to test?