Finally found a workaround for all the listed issues. For the sound cut-off issue, here is the fix.-Open Device manager, under sound, video and game controllers, right click realtek audio.-Select update driver.-Click on browse my computer for drivers.-Let me pick from a list of drivers available on my computer, then uncheck 'Show compatible hardware'. -Chose Microsoft as the manufacturer, and select High Definition Audio Device version 10.0.22621.608.-Click next. Let it install the driver and restart the PC.To fix the missing High Performance Power option:-open AWCC-open CMD as admin-type "powercfg /s SCHEME_MIN-type "POWERCFG.CPL"-make sure high performance is selected-go back to AWCC-Under the FUSION tab, click NEW PROFILE and then select high performance.-Click OK-go back to AWCC home page.-Click power then select high preformance   But seriously, why there are issues to begin with a 4k rig... I hope Dell will patch it soon.
Here is just a list of issues I've encountered so far: 1. SA (SupportAssist) will cause video and audio stutters randomly.(Uninstalling SA fixed this issue) 2. A split-second static noise when the system goes from no sound to sound. This doesn't always occur but it is annoying when it does. I am using the latest sound driver downloaded from the Dell website. 3. Performance power option missing from Windows and AWCC (Alienware Command Center). You can see it from this JustIN Tech Tips Youtube 4. Strange video tearing when streaming and video playback on certain things.(Power management mode set to "Prefer maximum performance under NVIDIA Control Panel fixes this issue) I contacted another user on Reddit with the same Aurora R15 configuration and funny enough he is also having the same issue.
Aurora R15, issues so far