Cool thanks all will give some of those tips a go
In terms of performance mine runs like a dog. Ended up adding a mod for GFX boost which helps. I am running 2 x970s @ 1440p. Pretty sure this game doesn't support sli so I'm not using the full power of the system.
I'm a grade A donkey. I forgot about one of the easiest ways to make money which is to buy 3 S class Scanner upgrades for your multi tool (the ones that increase the % on fauna and flora). You will have to travel to a few space stations to buy them from the vendors using nanite clusters, but with those installed everything you scan will give you more money. For example plants can give 70-100k per scan and some of the big animals can give you up to 400k each. That's the easiest way to make money in the early game.