I have a 65" TCL 4K Roku TV (65S451) that I have hooked up to my Philips Soundbar (TAB5306) through HDMI eARC. I have CEC turned one and the TV setting shows that the audio is running through the soundbar. It works great and I love the sound quality!
The only problem I have is that when I use the Roku remote to adjust the volume, the volume on the soundbar does not turn up as quickly as I press the buttons. In other words, there is a lag between the remote button press and the actual response on the soundbar. It's rather annoying when I cannot turn up or down the volume quickly enough.