itamv89291600​: What is your OS? Did you copy the 4K media off the GH4 camera card? If so, where is the footage in relation to your project file? Finally, what is the duration and file size of your 4K clip? Most importantly, what machine are you using? That is, processor, storage, etc.? And do you experience this problem with smaller format footage or only 4K sized footage? I keep thinking of more questions to ask . . . What is your playback resolution in the Program monitor? Is it Full, 1/2, 1/4, or 1/8?
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