Z170x-UD5-TH reboots after a minute instead of shutdown

[zipb]

I revived my old mobo using OC and Mojave. Works OK, but when I shut it down it reboots after a minute or so.

Checked a bunch of things, USB map looks OK etc.

There was this option(called fixshutdownsomething, I think) in Clover that fixed this, but I can't find the OC equivalent.

Anyone with a Z170x and working shutdown who is on OC? Can I have a look at your EFI?

Any ideas?

Thanks!

Zip