Multi-GPU system crashing on startup

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I sent this off to CDPR's tech support, but figured it might be helpful to ask (and keep updated) here:

Likely a rare issue, but worth asking: I have a workstation with two GPUs present -- a Nvidia 2080 and a 1080. The display is connected to the 2080 (intended to use for the game). The 1080 is connected to a receiver for sound. If I launch with both GPU's active, it gets a 'flatline' error. If I disable the 1080 in device manager, the game launches fine -- of course, with no sound since the receiver needs to be hooked in to the 1080 (not enough port types on the 2080 for both).
I was curious if you perhaps had a suggestion on how I might be able to get the game loaded up with both GPU's enabled, so I can use the receiver and get sound?
Thank you for reading & taking a look. :)
Just for reference, confirmed that Nvidia drivers are updated!
i7 6700k, Nvidia 2080, 64GB RAM (if any of that helps)
 
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