Mac Pro (Late 2013) Randomly Restarting

I feel.... Ignored...

For what its worth I have just purchased a trashcan, it started to cycle boot at start up, (only a couple of times, then would go), it appears (at this point at least) this was due to a MDP/thunderbolt 2 to hdmi converter i added, (timeline fits, with first time I noticed the issue) I have reverted back to the hdmi port in the mac, I'm not sure if this is the possible cause or not but thought it might help someone trying to diagnose their issue, as my last couple of starts have been fine, I'm not even sure this error could be generated by a thunderbolt plug in, any insights would be appreciated. Hope this is of assistance.

Should mention I'm running High Sierra for the sake of some older apps I like.

I can't explicitly tie it to the power settings at all on mine. I had thought that possibly I'd see a restart today (The 10th) at 07:26 because of

And it had been stable for a few days already. But I sat down this morning at 06:55 to discover it had restarted already. Half an hour before the scheduled wakeup

Admittedly mine is a lot better now that I have turned off all the other possible wakeups. But not 100%. There's still something happening there.

do you have a lot of third party login items, in about my mac, system report check logs, panic ones, list them by name so they are all under each other, then flick between them, quickly, while watching, if there are differences they will be obvious as you will see the changes, (not that easy to see reading them) this will determine if the errors are from one cause or a couple, as if the messages are changing slightly, may be more than one issue, as you have changed OS some S/ware may still work but make machine unstable. Im glad it is getting better though.

P.S. check third party Kernal extensions if any, Kext type files.

my response was to traveling Kiwi not sure either