I am having this problem also. Pretty much every other night the PC will resume from sleep, usually around 0200-0400. I have done everything, spent hrs searching, but little luck.
One of the fixes in the past for W10 was to go to task scheduler - Microsoft - Windows - Update Orchestrator , and then disable the 'reboot' option. This fixed the problem for me for a few weeks, but after Creator update the option was re enabled. Now when you try to disable it states that I no longer have the permission!
It turn out the Creator update has really forced this wake problem upon us.
Anyone have any further luck?