Seneca_lives

My feedback

  1. 2 votes

    We're glad you're here

    Please sign in to leave feedback

    Signed in as (Sign out)

    We’ll send you updates on this idea

    0 comments  ·  Premiere Pro » Playback  ·  Flag idea as inappropriate…  ·  Admin →

    How important is this to you?

    We're glad you're here

    Please sign in to leave feedback

    Signed in as (Sign out)
    Seneca_lives shared this idea  · 
  2. 164 votes

    We're glad you're here

    Please sign in to leave feedback

    Signed in as (Sign out)

    We’ll send you updates on this idea

    86 comments  ·  Premiere Pro » Playback  ·  Flag idea as inappropriate…  ·  Admin →

    How important is this to you?

    We're glad you're here

    Please sign in to leave feedback

    Signed in as (Sign out)
    An error occurred while saving the comment
    Seneca_lives commented  · 

    AMD GPUs are unfortunately not an option for those of us who rely on CUDA, but older (!) Nvidia cards also work fine. Older AMD CPUs and Intel CPUs in general also work fine with the same new Nvidia cards

    The frustrating thing is, the stuttering is clearly a software issue between a CPU and GPU that are both pretty much overpowered for most regular editing workloads - something to do in the way Premiere interacts with the Nvidia drivers for newer Nvidia cards, because it can and does work flawlessly when properly "prodded".

    All Premiere needs to do is detect this particular hardware combination and engage whatever it is that gets triggered by temporarily lowering the number of cores...

    An error occurred while saving the comment
    Seneca_lives commented  · 

    @Anonymous, thanks for the script, works great!

    Changing affinity while actually playing media seems to be the key.

    Which suggests that this works by "tricking" Premiere into thinking it has a heavier workload than is really the case, causing it to switch to a less aggressive scheduling / threading. Why this is specific to Threadripper and newer Nvidia cards is anyone's guess...

    An error occurred while saving the comment
    Seneca_lives commented  · 

    @Peter - sorry to hear that; the coreprio and process lasso programs don't do anything for me either.

    After some more playing around, for me it just comes back to "something to do with affinity needs to be triggered", for lack of a better expression. If I set the affinity to a small number of cores (4 or 6), I find I can play a simple timeline without dropped frames, and then I set affinity back to all cores and everything works great. That's the one method that keeps working reliably for me, anyway.

    (working with .mxf files from several sources)

    An error occurred while saving the comment
    Seneca_lives commented  · 

    I am 99% certain it is actually related to this issue:

    https://bitsum.com/portfolio/coreprio/#comment-4269175711

    Quote: "The ‘fix’ is also bizarrely imprecise. For affected processes, a call to SetProcessAffinityMask, without even changing the affinity (e.g. all CPUs to all CPUs), resolves it – at least most of the time. Best guess is that the preferred NUMA node for the process is removed and that causes the Windows scheduler to change behavior, as evidenced by the thread ideal processor selections, and more importantly the massive change in performance."

    An error occurred while saving the comment
    Seneca_lives commented  · 

    With the dreaded TR 1950X and GTX 1080 combination:

    As noted upthread, making changes - ANY changes, it seems! - to PPro's affinity in the Task Manager makes any stuttering go away for me, immediately and permanently until one of the next times I start the application.

    It's definitely a scheduling issue, not a performance issue, with both CPU and GPU use hovering around 5-8% even on complex projects.

  3. 4 votes

    We're glad you're here

    Please sign in to leave feedback

    Signed in as (Sign out)

    We’ll send you updates on this idea

    1 comment  ·  Premiere Pro » Performance  ·  Flag idea as inappropriate…  ·  Admin →

    How important is this to you?

    We're glad you're here

    Please sign in to leave feedback

    Signed in as (Sign out)
    An error occurred while saving the comment
    Seneca_lives commented  · 

    It seems to be a scheduling bug with Threadripper and GTX 1080 (Ti) cards.

    In my case, making any changes to PPro's affinity in the Task Manager (disabling a core, re-enabling it, it doesn't seem to matter), makes the stuttering go away.

  4. 4 votes

    We're glad you're here

    Please sign in to leave feedback

    Signed in as (Sign out)

    We’ll send you updates on this idea

    2 comments  ·  Premiere Pro » Playback  ·  Flag idea as inappropriate…  ·  Admin →

    How important is this to you?

    We're glad you're here

    Please sign in to leave feedback

    Signed in as (Sign out)
    An error occurred while saving the comment
    Seneca_lives commented  · 

    There seems be a scheduling issue with Ryzen/TR and the GTX 1080 (Ti), causing brief "freezes" and frame drops. Changing PPro's affinity in the Task Manager should make this go away.

Feedback and Knowledge Base