Losing render files

[cmacfido]

I am working on a very heavy project with multiple sources, green screen and virual backgrounds.  It took me over five hours to render this thing out and when I shut it down and re-opened it, all my renders were gone. In fact one time I duplicated a sequence and lost half the render files.  I am on Premiere Pro 2020 and this is a major problem.  I have more of the shows comming and if this keeps up I will have to switch to Avid.  Is there anyway to avoid this?

[Peter Reef]

thanks for your help @JonesVid. i am working on a 30 min documentary with 50p UHD footag from Sony FX3 - mostly XAVC-HS. As its taxing the system I am mostly working with proxy files - prores proxy in UHD. Especially when restarting premiere or reopening the project this happens. Not all Render files are lost but suddenly there are a lot of yellow or red parts in the green timeline. I am working with adjustment layers for CC, sharpening Video filter, those are always locked and the lost files are not restrickted to a certain adjustment layer area.

[Philippe36967732uuik]

Same issue here! And absolutely puzzled to see that Adobe is not providing any answer to this issue.

What the hell is going on? 

[Kevin-Monahan]

Hi Ronald,

I've heard about this issue, and it seems to have something to do with ProRes files. One user recommended trying DNxHD/HR files for video preview files instead and didn't have the problem any longer. Can you try a test and see if that might be a solid workaround for you? If so, be sure to report back, so I can let the product team know. Sorry for the frustration.

Thanks,
Kevin