While doing even basic editing in Premiere, scrubbing the timeline, scrubbing through clips in a bin, sometimes Premiere will become unresponsive. Scrubbing the timeline the viewer is black, not showing what is on the timeline. Icon view in bins will not scrub any clips mousing through them. They are frozen. Hitting the space bar in the timeline audio plays, but still no visuals appear in the viewer. Double clicking any clip in a bin will not load it into the preview window. So I choose "File", "Close project" (or even "Close all projects") and project/s close no problem. Back the initial Premiere screen to select a project to open. If I open the project again, nothing changes. The only way I can get Premiere up and running again is to completely close Premiere. It hangs and I have to force quit. Then open holding the "Option" key down to trash prefs. All is right again, often for days with no problems. Is this currently normal behaviour from time to time in Premiere? Thanks for any feedback. I had this happen several years ago more frequently editing ProRes footage and years before that editing AVCHD. In this case all the footage is ProRes 10bit, 4:2:2, 1920x1080p, 29.97 fps. Mac running 10.12.6 Sierra, Premiere Pro 13.0.3, 12 gb ram, AMD FirePro D300 2048 mb, Kona LHe, FirmTek 5 drive RAID with 7tb free, connected via eSATA from a FirmTek eSATA card in a Sonnet thunderbolt enclosure.
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