So you can watch DV content, it will just look great and sound kak. But then by that same logic, anything including non-DV content will also look good and sound kak. So you're saying your entire TV is now useless, not just DV. Right?
Never had that issue on either original or J1127 firmware but my receiver doesn't support atmos so it may not have presented itself at all.
So when you play any other content without atmos support there's no delay?
1. Is sound bar connected to ARC HDMI? (Obvious, I know, but just checking)
2. Switch to the ARC HDMI as an input. Make sure enhanced HDMI is enabled.
3. On the source HDMI (PC) try changing the sound output from passthrough to DD+
Had the exact issue with my amp. Amp is now connected to the ARC HDMI socket.
When HDR is activated, it has its own picture settings "profile". So if you've made some adjustments while watching SDR content, those settings need to be changed again. You only need to do this once though...