Neither enables HDMI audio
macOS HDMI audio is not native on non native hardware
See AppleHDA HDMI Audio/Post #1: I. Before You Install HDMI Audio
II. AppleHDA HDMI Audio Methods
Nvidia HDMI audio: see Post #1: *Nvidia ..., DP2HDMI adapter required
Not working, see Post #1: IV. Problem Reporting
Post to linked thread
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