UE crashes system via overworking the power supply? Maybe?

So, every time I try to work in Unreal Editor, it causes a massive power draw on my machine that quickly crashes the whole box. I can run games and Unreal based applications fine, but the editor… nada.

System is going on a couple years old, btw. i7 processor;750watt power, RTX 2080 ti 12g card.

Runs games great; but not the editor, and I’d really like to fix that. Any help is greatly appreciated!