Swap out your other video card, And run the game. Sometimes a faulty video card will crash an entire system like that. Of course an underpowered pc will also do that. Power supplies will fail intermittently sometimes, And shut you down.
Thanks for the replies. I saw in another thread that someone having performance issues in ME1LE resolved it by turning off Corsair's iCue utility. I had iCue running in the background because I have a Corsair AIO and RAM, and an out of date version at that. So I both updated it and closed it out while playing. And of course there was the patch on Monday that supposedly improved performance, so that could have helped. Played a whole bunch Monday and yesterday - performance is still janky on uncharted worlds, but I played without any crashing. So I'm hoping the issue is resolved, I'll give it a week before I mark it as such.
