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Inspiring
December 18, 2024

Lumetri Effect huge input lag in PrPro 25.2.0 build 57

  • December 18, 2024
  • 50 replies
  • 5360 views

Trying to grade a clip in premiere pro beta but the lag time between making an adjustment and the program monitor updating is about 3-5 seconds. It used to be basically instantaneous. Enabling and disabling the adjustment layer also takes 5+ seconds for the pogram monitor to display. 

 

Clip has basic lumetri adjustment (exposure / shadow / etc) And above it is a adjustment layer with a lut (slog3 to 709 v2 provided by sony) and a creative effect lut from speed looks. So in node speak, that would be three adjustments or layers. It plays back the clip in real-time but making an adjustment is arduous with or without proxies turned on. 

 

Sometimes after awhile it will become more responsive but it still won't "live update" it will only update once you release the mouse button.

 

Tried clearing cache and prefs, but problem remains. 

 

Tech details: 

 

Windows 11

Windows v.10.0.26100.1

 

PrPro 25.2.0 build 57

 

NVIDIA GeForce RTX 2080 Ti v.32.0.15.6636

Studio Driver 566.36

 

Threadripper 3960x

256GB Ram

 

3840x2160 timeline 23.796

1920x1080 ProRes LT proxy media 

3840x2160 A7s III source media 

 

4129.mp4
Type: MPEG Movie
File Size: 800.15 MB
Image Size: 3840 x 2160
Frame Rate: 119.88
Source Audio Format: 48000 Hz - 16-bit - Stereo
Project Audio Format: 48000 Hz - 32 bit floating point - Stereo
Total Duration: 00:00:23:000
Pixel Aspect Ratio: 1.0
Alpha: None
Color Space: Rec. 709
Color Space Override: Off
Input LUT: None
Video Codec Type: MP4/MOV H.264 10 bit 4:2:2

 

Proxy Media

Proxy.mov
Type: QuickTime Movie
File Size: 1.08 GB
Image Size: 1920 x 1080
Frame Rate: 119.88
Source Audio Format: 48000 Hz - 16-bit - Stereo
Project Audio Format: 48000 Hz - 32 bit floating point - Stereo
Total Duration: 00:00:23:000
Pixel Aspect Ratio: 1.0
Alpha: None
Color Space: Rec. 709
Color Space Override: Off
Input LUT: None

 

QuickTime Details:
Movie contains 1 video track(s), 1 audio track(s), 0 closed caption track(s), and 1 timecode track(s).

Video:
There are 2760 frames with a duration of 1001/120000ths.

Video track 1:
Duration is 2760
Average frame rate is 119.89 fps

Video track 1 contains 1 type(s) of video data:

Video data block #1:
Frame Size = 1920 x 1080
Compressor = Apple ProRes 422 LT
Quality = Most (5.00)

 

Source Media on  2TB Sabrent Rocket 4 NVME(very fast ssd)

Proxy Media on 1TB Interal NVME SSD

Project on Sabrent SSD

 

 

50 replies

Known Participant
February 19, 2025

I still have this issue with 25.2.0.119 version.

Participant
February 19, 2025

The Issue is no longer present for me, on today's Beta update 25.2.0.119. Can anyone comfirm this?

R Neil Haugen
Legend
February 13, 2025

So that to me, indicates they're working on changes for the Canon format that may actually get it working better. Which is good.

Everyone's mileage always varies ...
Known Participant
February 13, 2025

Don't have any issues in beta 25.1, so it is not a codec or hardware issue. In latest 25.2 beta I have issues in My Macbook Pro and my 7970X threadripper PC. Cinema RAW light playback with the latest beta 25.2 is very good on my Macbook Pro because of the Metal acceleration. It is just that when you do cuts or color correction timeline freezes.

R Neil Haugen
Legend
February 12, 2025

Gee, when using high-k count long-GOP media from drones one can get lag ... yep, that is the nastiest media for editing made. If you don't have the exact hardware bits for processing that, there can be troubles.

 

And the 8k Canon is still an issue, but a separate issue, due to each format/codec having completely different processing patterns in the software and hardware. I've seen a few posts with troubles with that specific format/codec.

 

So you won the prize ... basically all the media you're editing has issues, and they are different issues each needing a different fix. Ouch, basically.

 

But the hardware you've got is kinda crucial to getting decent results with your specific long-GOP stuff ... and they probably need to figure out that 8k Canon stuff better in Premiere.

 

Everyone's mileage always varies ...
Known Participant
February 12, 2025

My media is mainly 8K Canon Raw light, 4K HEVC from Mavic 3 Pro and Pocket 3. So it seems to happen on a lot of different media files.

R Neil Haugen
Legend
February 12, 2025

They have an acknowledged issue with some Sony media ... I wonder if this is part of that issue.

Everyone's mileage always varies ...
Known Participant
February 12, 2025

This issue is still not fixed. I'm beginning to think that this is a side effect of some recently implemented new feature... I don't believe when they say that they haven't been able to reproduce this in-house. Some comment about the current situation would be welcome.

Participant
February 7, 2025

Hi @jamieclarke,

I've been waiting for improvements in Premiere Pro, but unfortunately, they are slow to arrive. The current beta version is practically unusable. I’ve recorded a screen capture to illustrate the issue—here’s the link: https://capture.dropbox.com/VG9NrgrlFDzVFtds

Issue Details:

  • Video format: 4K 50fps 10-bit Sony
  • Severe lag and occasional freezes, with delay time increasing based on timeline length.
  • If clips contain Lumetri corrections, the entire cutting process becomes extremely slow.
  • Playback causes CPU usage to hit 100%, making real-time editing impossible.
  • Interestingly, when using an external Lumetri controller, the issue does not occur. ex https://capture.dropbox.com/mKpSrHIZgnW5SI4J


 
System info

3200 Intel(R) Core(TM) i9-14900K 24 32

 

AdapterRAM Caption DriverVersion
4293918720 NVIDIA GeForce RTX 3060 Ti 32.0.15.6614
2147479552 Intel(R) UHD Graphics 770 32.0.101.6129


    Application: Premiere Pro (Beta) v25.2.0.104
    OS: Windows v10.0.26100, RAM: 63,77 GB GB, CPUs (logical): 32

Known Participant
February 4, 2025

Here are my system specs:

 

Macbook Pro M1 Max 64GB

 

Ryzen Threadripper 7970X

128GB

Nvidia Geforce 3090 RTX

 

This is happening on both, so I believe it is not because of hardware. Playback is fine. It is just when you do some changes, for example change color settings in Lumetri, timeline freezes for some time. In 25.1 this issue is not there.