The Dolby access based Window OS when you playback Dolby Atmos contents based on Dolby Digital Plus, it is sent audio signals by PCM format to AVR. Therefore, the indication of signal is PCM at AVR. However, it is Atmos sound when you select Dolby Surround Mode. It is designed by Dolby and Microsoft. From Denon perspective, it is normal. Dolby Atmos has several format. 1. Dolby Atmos based on Dolby Ture HD format.It is used for the Blu-ray/UHD. 2. Dolby Atmos based on Dolby Digital Plus format.It is used for the video streaming service like a Amazon Prime and Netflix. 3. Dolby Atmos based on PCM format format.It is used for the Xbox, Windows PC based on the Dolby Access.
[NVIDIA Ampere GPU]: With the GPU connected to an HDMI 2.1 audio/video receiver, audio may drop out when playing back Dolby Atmos. [3345965] 貌似又不是微软的锅了,截止到2月1日,nvida最新的511.65版本驱动还没修复杜比全景声的问题。