I've had an M4000 in my desktop and a P620 in a side-box, both running SuSE Tumbleweed for a year or so using the NVIDIA drivers. Once I got the initial setup done (follow the directions), I've had zero issues. Updates have been smooth, though there's an extra step now (hit ENTER to accept the NVIDIA license). GLMark2 score is a bit north of 7000.