Jim, are you playing your 90Mbps clips inside Premiere, in the source window?
I spent another couple of hours trying to tweak all sorts of things from Premiere's memory and playback settings, to NVidia card settings, to placing the files on SSD.
No success. CPU consumption is around 15%, memory - 20%, HDD, network - no visible bottlenecks, though the playback becomes choppy in about 2 seconds every time I start it.
Someone on Internet suggested to convert gopro footage using Cineform Studio, but adding additional transcoding step and increasing file sizes 5 fold does not sound like an efficient workflow; besides the playback is still choppy if I keep resolution above 1440p (the resoultion I plan for the final video).
I also tried to play the files in Cyberlink's PowerDirector movie editor - no problem playing it even from the sequence.
I seem to have only three options now: use proxy files, or try editing despite the playback problem, or use another editor (as I said I have PD11).
Not sure if it matters, but I am on the first month trial of the Premier. I have read people had problems with unregistered versions of the software.
Also I do not see any Cineform preset when trying to open a new project, though I have installed the GoPro Cineform Studio.
Should I try installing some other codec suite, e.g. K-lite?
What else can I try to do?
Thanks.