I've got a 580GTS too.Here's hoping my RX 580 doesn't give in any time soon... no way I can afford a new graphics card right now. I managed to use a crappy low end budget HD 6670 for six years and eventually killed it playing GTA 5, I'm sure I'll be fine.
I've found it pretty good for ED however I don't do any of that planet side running about stuff and my monitor is rubbish.