Warp Stabilizer extremely slow when "Auto Detect Log Video Color Space" is enabled

[Enumcluck]

In Premiere Pro 24.3, the Warp Stabilizer effect is extremely slow when processing log footage with the "Auto Detect Log Video Color Space" option (ADVLCS) enabled in the Lumetro Color > Settings panel. I'm defining slow as 1/12 the speed observed when applying a fresh instance of Warp Stabilizer to the same clip with ADVLCS disabled. The log footage was shot on a Panasonic S5ii (4:2:2 10-bit LongGOP, 150Mbps) and I am actively using Quicktime ProRes proxy files (quarter frame size) when applying the Warp Stabilizer effect in both scenarios.

A few quick computer specs in case they are relevant: 

• Primary drive is 512GB SSD
• Project and source footage drive is external SSD connected through Thunderbolt 3 port (Crucial X9 Pro, 4TB)
• Cache files stored on secondary SATA platter HD
• Intel(R) Core(TM) i7-7820X CPU @ 3.60GHz 3.60 GHz
• RAM: 32.0 GB (I know... more would be good!)
• Windows 10 Pro Education, Version 22H2 (OS build 19045.4046)
  Experience Windows Feature Experience Pack 1000.19053.1000.0

[mattchristensen]

@Enumcluck Thanks for reporting this, we're investigating what's going on.

[Fergus H]

@Enumcluck I've sent you an email to get more information. 

Thanks for your very clear problem description!

[Enumcluck]

Thanks, Fergus! I responded to your email with a sample project. Hopefully it helps your team isolate the issue. 

[Kevin-Monahan]

The status of this bug report has been updated.

[Tasos27997443xu8h]

Hello there! i have the exact same issue on Premiere Pro 25.0. Did you mange to find any solution??

[Enumcluck]

I haven't received any updates from Adobe to say if they are making progress on this. For now, I just gave up on "Auto Detect Log Video Color Space" and went back to using LUTs on an adjustment layer to avoid GPU processing conflicts for Warp Stabilizer. Until Adobe can address conflicts with commonly-used effects, I can't afford the slower workflow. 

[Tasos27997443xu8h]

Thank you for the immediate response! I will also stick with the adjustment layer solution. However, it seems strange to me that no one else seems to be facing this issue. I mean, no one using the ADLVCS function with the Warp Stabilizer?? That sould be widely known to the community but i didnt find any other relevant thread.

[Enumcluck]

To be fair, my understanding is that Adobe Premiere Pro has an effects pipeline that tries using the GPU, but if one of those effects runs into an issue and needs to default back to the CPU, it affects all downstream effects in the que. Drivers and GPU hardware all play a part.

I've since moved to a newer machine with an NVIDIA GeForce RTX 4070 and should retry ADLVCS but haven't had time with several back-to-back work deadlines. Once those are behind me — crossing fingers for next week! — I'll have to rety with the test project I sent to Adobe and see if it behaves any differently between the new hardware and Premiere 25.0.