Graphics Card Selection (eGPU & macOS)

Hi,

I normally play HoTs using a eGPU on my macOS machine to an external monitor - this works great. However, I would like to be able to use the internal display of my MacBook while being accelerated by the eGPU.

I’ve been able to do this in WoW: Classic, where in the settings there is an option to select the graphics device. I’m able to see both the integrated intel graphics and my external graphics card in this list and switch between them.

Heroes doesn’t seem to have an option to let me select a graphics card as far as I can tell; it appears to just auto detect. And, unfortunately, when I connect with my eGPU connected it still defaults to the integrated graphics card.

Is it possible to tell Heroes to use a different graphics card? I’ve seen forum posts discussing this before but they are all entered around Windows and Nvidia. I’m using macOS and a AMD RX580.

Thanks.