Thanks. I wouldn't be looking to use scaling - would just run it on its native resolution. I've used a 34" at native on a windows PC at work and like the general size of everything at that resolution.It's a low enough res that using scaling is not a feasible option because everything becomes too big and you get no desktop space.
It will look acceptable, but not as sharp as you might be used to on your Macbook Pro display for example.
Whether you get e.g max refresh rate is anyone's guess.