So it seems I have encountered a major bug where the game comes to a grinding halt, black screens and then proceeds to exit to the desktop if you fast travel with Power Armor on. I have even replicated this on another PC. I was wondering if this has happened to anyone else. I'm not sure if it is because the power core runs out of juice due to the distance of the journey but it is quite frustrating!

I was just wondering what would happen if you fast traveled with power armor on...

Hmm. I fast-traveled several times last night with Power Armor equipped and nothing went wrong.

What about drain on the fusion core? I haven't played much yet, so I don't know how long they last in the power armor and was wondering if the game factored in the time lapse in fast traveling on battery drain.

I've found fast travel does not deplete my core.

It's how I'm saving power, go in sneaky beaky like and scout the area. If it's gonna get messy I bring in the powr armour and big guns.