I am trying to edit 2.7k 60fps footage (shot with my GoPro Hero 4 Black) using Adobe Premiere Pro CS6. But even when I try to play a clip in the source viewer (i.e. before even putting a clip onto the timeline), I get a very laggy experience that feels like 2 frames per second. If I play the same footage in my OS's native media player (e.g. Windows Media Player or Quicktime) I get smooth playback without any visible frame drops. I have tried converting the H.264 compressed footage to Cineform digital intermediate, but this does little to resolve the problem.
I am aware that editing high resolution video is demanding (see, e.g., Adobe Premiere Pro CC editing/playback performance), but my question is specifically why does playing back raw, unedited footage perform so much worse in Premiere than in a dedicated media player when both are apparently performing the same task?
System specifications are as follows:
System 1: i7 950 at ca. 3GHz, 12GB DDR3, GeForce GTX 760 2GB, 256 OCZ Vertex SSD
System 2: 2013 MacBook Pro Retina, i77 2.7GHz, 8GB 1600MHz DDR3, GeForce 750M, 256GB SSD
I have the same issue on both systems.