Where do I start to try and get sleep working properly on Vanilla AMD?

Using Catalina 10.15.1, freshly updated.

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• AsRock b450 Pro4
• R5 2600x
• Sapphire RX 470
• 16gb DDR4
• NVME SSD

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I have basically everything working aside from Sleep Mode, which would be very helpful, and who doesn't want that last puzzle piece in place?

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I am using OpenCore instead of Clover, as I couldn't even get to the installer with Clover. The install is fully Vanilla with the original kernel and iMessage and other services working.

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Not really sure where to start, if it's something a Kext could fix, or if its something more.