This is a great port, I have played for 26 hours since it got released aparently and have only had some minor issues. 2 crashes to desktop, some wierd mouse bugs and some sound issues but other than that, it has been running flawlessly, perhaps even better than it did on windows when I played it on there.
My specs:
64 bit Antergos (Pretty much arch with a graphical installer)
i5 4760k
GTX 770 - Running closed source drivers
16 GB of RAM