HDMI Port not outputting video in macOS only

Hey,

My macOS HS Opencore build runs stably, however only the VGA port on my GTX 750ti will output video once booted into macOS.

With both HDMI and VGA connected to the same TV, macOS sees the TV as a HDMI audio device, but will not output video to it.

Booting in opencore does work when using HDMI however.

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i7 - 3770

10gb DDR3

Asus Nvidia 750ti

macOS high sierra 10.13.6 (17G14033)