Stork, I realized after seeing your last post, that I also had "Put hard disks to sleep..." checked in mine, and perhaps that was causing sleep crash when using the settings above. So I unchecked it and tried your trifecta again last night. Upon doing the autopoweroff 0 command, terminal gave me a warning message, which I understand from scouring the internet may mean that I have an inconsistent sleep setting elsewhere. This morning, computer locked up again as before with those settings. Upon reboot, computer reported an "overclocking" crash. One last confession, during original install, I did not select "load optimized defaults" as indicated in the general Sierra install bios instruction portion because this was an initial install, so I assumed (possibly incorrectly) that optimized defaults would already be set.
Any suggestions? Otherwise, as I mentioned before (and for the sake of porkfoo), sleep seems to work fine if I disable "Wake for network access", disable "Enable Power Nap", and leave autopoweroff on (i.e., at "1")--still haven't had a chance to try them one by one to see if only one is causing problem.
One last question related to Hero build (but also Sierra upgrade)--auto upgrade to 10.12.2 went flawlessly--after a few seconds, Nvidia even updated the alt web drivers all by itself. Trim, sound, etc. all working perfectly. I haven't found a good guide on upgrading Clover, however. Clover wiki seems to indicate it is automatic. Question is, will it keep my existing config.plist or should I make a copy of it and replaced the new one it might make. And if that won't work, which steps should I repeat in Hero instructions (e.g., just Clover boot flags or also replace patches, etc.)
Thanks for any guidance!