Serious issues with playback on large project

Report · Nov 07, 2019

I have a large wedding project I'm close to finishing 330gb of footage show with a Sony FS5, A7iii and a Nikon D750 as a third camera.

I edit the project in parts, created a Multicam of the ceremony then speeches then the intro middle and end filler parts to go around them. When I put them all together on a single timeline to prepare for export approx 2:45hrs (It was a super long ceremony) I'm running into severe playback issues that make the project unusable. I can operate the programme just fine I can apply effects and manipulate keyframes without any issue but if I play on the timeline or move the playhead by clicking the mouse the preview window there is a massive delay 10-30 seconds and sometimes it won't play at all. It can just freeze and grey out the screen for 5 minutes until it comes back to life. Moving the playhead by pressing up or down on the arrow keys doesn't cause a problem.

Just to add my footage is on an external hdd and my proxies are on an external ssd

I made proxies and have global Fx turned off but it doesn't help. I also tried making a separate project with just the highlights to make the short social media video but I get the same issues. I tried opening it in the new premiere 2020 but I have the same issues there.

I should also say no other project I have is causing any problems even other large weddings I've done in the past.

Any help would be greatly appreciated it's creating a huge bottleneck I have other projects that are being delayed because I can't finish off this project my computer is a windows 10 pc with. 64GB RAM, 1023MB NVIDIA Quadro P2000, Intel i9 @ 3.30Ghz

Report · Nov 07, 2019

Instead of putting all the sequences in one timeline, export every sequence into an intermediate file and use those for final output.

Report · Nov 07, 2019

Before seeing Ann's post, I was going to recommend the exact same workflow! Seconding the motion, export smaller completed segments to ProRes or DNxHD or similar then assemble those pieces in new project for final export as a whole. Have done that for years on large projects, and partially for "safety" having an exported master clip of a complete segment on a different hard drive in case of catastrophe my work would be safe.

Thanks

Jeff