HiI been looking for a solution to this for ages and have spent days talking to Samsung with no real help. I have a 49q70 tv a ns a q70r soundbar.When I connect any device to the tv and use passthrough to the soundbar I have issues. If the sound is set to PCM no problems, except I loose surround. the minute I change the sound to Dolby Digital I get a sound delay about .7 seconds roughly.ive reset both devices to factory ive changed my hdmi cables to rule them out. if I pass sound to the tv its fine, second its Dolby Digital over arc we get a delay. and Samsung did a EDID reset. if I connect the device/devices to the soundbars own hdmi input no delay at all.Also if I use optical to from the tv to the soundbar - there is a delay also.
the Samsung tv apps seem fine. all I can see is a processing issue when device - TV - soundbar is used.I am at a complete loss what to do. if anyone has any ideas or a place to point me to I would be forever grateful and will buy you a drink..thanks