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Evil Edison
Evil Edison
Known Participant
April 1, 2021
Question

Troubleshooting playback

  • April 1, 2021
  • 3 replies
  • 2438 views

Hi folks

 

I'm getting dropped frames when playing back a timeline that is mainly 6K Red footage. System is a PC with Threadripper 3970X 32-core, 2080TI GFX, 128GB ram. Using the latest Nvidia Studio Drivers. Attached to a QNAP 10G Raid which gets around 1,100 MB/s. On paper this should be playing like butter. I say this because on my iMac Pro (10 core, Vega 64, 128GB ram, connected to same QNAP), it's playing like butter. No dropped frames. Only thing the iMac has better than the PC is 16GB of video ram vs 11GB. Is that enough to cause the performance difference or is there something else I should be looking at?

 

Thanks in advance!

This topic has been closed for replies.

3 replies

J
Javierlen
Participant
April 16, 2021
I think the problem may be related to not having cache writing enabled on your RAID disk.
 
I was experiencing the same issue (dropped frames during playback, even with sequence rendered) on Premiere Pro v15.1 running on a Ryzen Threadripper 2990WX 32-Core, 128GB
RAM, Geforce RTX 2080 Ti 11GB video card, 14TB m.2 NVMe RAID 0, and all with latest system and driver updates.
 
I had no problems when working from a different project that was on an external USB 3.0 Hard Drive or when opening this same project on a 2015 Macbook Pro. Though I did have some playback issues (not as bad as the one above) when trying to playback from the same USB drive some ProRes RAW 5.9K files recorded on a Ninja V-Panasonic S5. 
 
So I was convinced that hard drive speed now couldn’t be the issue as a stripped RAID drive is much faster than an external USB 3 Hard Drive, plus the files I'm working now are 4K. 
 
When I created this RAID (with seven 2TB NVMe disks) I figured I shouldn’t need to format this RAID with cache read or write as both reading and writing speeds go way beyond 10,000MB/s.
 
It made no sense having dropped frames on such system right? well I first tried moving the premiere cache media folder to my local drive where windows and premiere are installed, but nothing. I then enabled Write Back Cache on with RAIDXpert2 software to see if that solved the issue but still nothing, playback still was dropping frames, until I applied what Kevin-Monahan from Adobe suggested here:
 
Choose Preferences > Media and disable Hardware Decoding. Restart the computer. Trash preferences when relaunching Premiere Pro. With all projects still closed, choose Preferences > Delete all media cache (I still kept the Media Cache folder on my RAID drive as it is still local (internal).
 
After trying this with Write Back Cache enabled on my hard drive playback began to run smooth as butter again.  No more dropped frames!
 
So I guess Premiere really needs to work with a drive that has cache writing on (no matter where the media cache folder is located). So maybe you should check if the hard drive you are using has cache on or off. In my case that solved the issue.
Evil Edison
Evil EdisonAuthor
Known Participant
April 16, 2021

I'll definitely give this a look. But for the record, I'm not getting dropped frames on my iMac Pro which connects to the same QNAP RAID drive. It's actually connecting at a slightly slower speed than the PC but still gets smoother playback. Thanks for the tip.

 

On a side note, I have to say that 13K read speeds are just obscene 🙂

 

    B
    basil1891
    Inspiring
    April 5, 2021

    ...connected to same QNAP... 

    What about the interface, is it the same? Both are 10GbE, or Thunderbolt on a Mac vs 10GbE on a PC?

    Evil Edison
    Evil EdisonAuthor
    Known Participant
    April 6, 2021

    Yes both are connecting via 10GbE. The PC gets slightly faster read/write times.

    B
    basil1891
    Inspiring
    April 6, 2021

    try this:  select clip > Effects > Master * ... > RED Source Settings > Image Pipeline =>  switch to Legacy

      Kevin J. Monahan Jr.
      Community Manager
      Kevin J. Monahan Jr.Community Manager
      Community Manager
      April 2, 2021

      EE,

      Sorry. Choose Preferences > Media and disable Hardware Decoding. Restart the computer. Trash preferences when relaunching Premiere Pro. With all projects still closed, choose Preferences > Media Cache and delete all media cache. Make sure Media Cache is on a local drive.

       

      See if you have the same issues after performing these steps.

       

      Thanks,
      Kevin

      Kevin Monahan - Sr. Community and Engagement Strategist – Adobe Pro Video and Audio
      Kimblah
      Kimblah
      Inspiring
      April 2, 2021

      I think this is related to the Threaddripper system. I'm having problems with Canon R5 8K RAW files, playback is fine on my other PC.

       

      Just look at these:

      Premiere Pro 15.0 crash Canon R5 8K RAW - Adobe Support Community - 11886821

       

      ProRes Raw on Windows 10 issue - Adobe Support Community - 11644705

       

      My assumption is that Adobe doesn't have a Threaddripper system to test Premiere. Adobe can you say that you have tested Premiere extensively on a Threaddripper system and all these things are working for you?

      Evil Edison
      Evil EdisonAuthor
      Known Participant
      April 2, 2021

      I wonder the same thing. Would be interested to know what the folks at Puget Systems have to say about it. They strongly recommend the Threadripper systems for Adobe and I know they've done a lot of testing. 

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