When SanDisk Ultra I have no problems until I. In Hochen resolutions with 120FPS or even 240fps movies Otherwise, even the Ultra version is sufficient.
The card (SanDisk Extreme) I have also in the high areas and FPS in Full HD 720p or no problems. If at one or the other should bucking the recorded video, then the more likely be due to the PC / laptop hardware than on the map (so my experience with my laptop - compared to desktop PC).
Thus I can pass for all Gopro models (since the Hero4 BE is the most demanding) recommend. I think for other applications (mobile, tablet, etc.) is recommended this card, since these Anwendeungen are less intense as the GoPro!
Buy recommendation