10.13.2 Sleep issue with NVIDIA GPU

After upgrading to 10.12.2, my hackintosh will no longer sleep. I put it to sleep, and 1 - 2 minutes later, it wakes back up. I've seen similar issues being posted for builds with AMD GPUs, and something to do with the number of output ports on the GPU, but I'm running an NVIDIA GTX 970, so I'm not sure if it is the same issue. Anyone have any solutions they've found?

CPU: Intel i7-4790k

Mobo: ASUS MAXIMUS VII HERO

GPU: ASUS NVIDIA GTX 970

OS: macOS 10.13.2 (High Sierra)

submitted by /u/kgfromthemv
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