DaVinci Resolve 17.2.1 Freezes and more..

Hi there,

I have no idea exactly when the issues started, after what software version update, but I can not reliably work using DaVinci..

Today just had few weird issues when working on a 2 min "Video Testimonial" project:

1. I have 5 audio channels: 2 from Pocket 4k internal mics, and 3 from MixPre2-3 32bit audio, when the first 2 MixPre channels are silent (the microphone was connected to channel 3 in mixpre). All the audio was synced using timecode to pocket 4k video.
All the audio channels were too silent, but when I tried to normalize the audio to -10db, it didn't seem to work properly. Then I unlinked all the audio channels, and tried normalizing only the 5th audio channel, and the result was better, but still not loud enough like I was expecting.. So I had to normalize it to -2db in order to make it loud enough..

2. Then when I finally started the final project rendering, the progress bar was stuck on 1% and would not proceed. Couldn't stop the render and had to Quit DaVinci Resolve by right clicking on its icon on my Mac.
Then I got Report Error message, reported, Restarted the app, and again the same issue. Then I restarted the MacBook Pro, and again the "rendering in process" shows 00:11:32 Remaining 1 of 1 jobs, but on the job 1 it shows 00:07:03 Remaining and stuck on 1%.

Activity monitor shows that DaVinci using only 4.4% CPU, and only 5.48GB of RAM out of 32GB, and no SSD activity.

I'm stuck and don't know what to do in order to keep working.

Any suggestions?

Which source codec, which hardware and which codec are you rendering into?

I tried exporting QuickTime H.264 and H.265, and Mp4 H.264 and H.265 codecs.
The project itself is Braw 4k.
Everything is updated to the latest versions.
My hardware is: MacBook Pro 6 core i9 with 32GB Ram and Radeon Pro 560X 4 GB, macOS 11.4

If you are tying to export UHD, it might be a bit too much fore your GPU, try HD in that case.
If it's already HD, try to export ProRes.