Not going to claim to get no stuttering, but
Elite: Dangerous is generally quite smooth for me at 4k with well past 'ultra' settings on my OCed i7-5820K and GTX 1080Ti.
If you want something quantifiable, this is a plot of about 80k frames (a twelve minute mix of stations, SC, and RES combat, with a hyperspace jump thrown in for good measure) recorded with NVIDIA's Frameview, red spikes showing game engine latency in issuing presents:
It amounts to a handful of momentary stutters when switching instances and loading assets, most of them barely perceptible. The one big spike is jumping to another system.
Plenty of other people do get stutters, but pinning down their issues to any specific problems is often difficult. Anyway, the game is certainly capable of running relatively smoothly.