this is weird. I'm still trying to figure out what's going on, but it's quite consistent:
I've got two vegas FE and when I'm running this miner from Win10 task scheduler (task with highest available privileges) the miner won't pass the initializaton stage.
And when executed directly it runs fine...
it just sits there, while machine is still responsive, the task is very much dead (vega with 2017.Q4 driver - the only one that supports Overdriven tool proper)

EDIT: well... apparently it looks like overdriven tool gives me trouble and not the miner... yep freaking driver I guess - had to delay task for half a minute after login in order to be able to set proper configs for cards.