I use SV Pro13 for editing AVCHD 4K videos from my Panasonic GH4. I have a brand new pc now:
CPU: i7 6800K, GPU: AMD R9 380 4GB, system: Windows 7 pro 64 bit instaled on SSD, video projects on another SSD, RAM 32GB.
When I put on my timeline 4K videos (3840x2160x32) without any color grading I can preview them in best full preview mode very smoothly. But if I do some basic color grading (color corrector, color curves, white balance, black and white) it is almost impossible to watch it and even in best half preview (1920x1080x32) it does not go smooth at all.
When previewing my CPU usage is only around 55-60% and GPU only 25%. I do not understand why it can not go higher and the playback is not better.
Please can you advice if I do something wrong? I think that i7 6800K and R9 380 4GB should be enough to manage preview much better.
Thank you a lot!