I absolutely love this new converter - BUT....

Noise reduction is on the Detail tab.

There’s also the Smoothing local adjustment tool on the Local Edits tab which can be used to reduce selected noise in limited circumstances. But it’s not a general purpose NR tool.

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I run ART on 2 computers with AMD processors: one with 12 cores, the other with 16. Both have 64 GB of RAM. I use Linux (Fedora 42) and FreeBSD 14.3. On all systems all cores are utilized and ART is reasonably fast, including noise reduction.

As suggested earlier check the Task Manager while ART is processing an image. Are all CPU cores utilized?

What memory setup are you using - are the ram clocks set to what they should be?

I’m using ART on a Ryzen 7 5700X which has a similar cpu power like to 14400F and ART is fast enough for most operations during editing.

You might want to tinker around with the settings in the “Performance” tab, especially:

I heard ruminations on RawTherapee issues that there might have been a recent bogus update from the msys2 package management that might be propagating…

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Hi.
I can report just a suggestion I had after installing ART 1.25.7.
I have only one image in my catalog (I’m trying to test extenively ART, before using it).
Until the version 1.25.6 I did not find any slowing during the load of the image in the editor.
Now using the same environment, monitor, RAM, CPU etc…, the loading of the image in the editor seems much slower.
I’d have provided a scientific test by comparing the two versions of ART and taking the time of loading of the test image in both cases.
Unfortunately I can’t do this test until next week.
If some wants to try…

My environment:

  • HP Z2 Tower G9 Workstation Desktop PC
  • CPU: 12th Gen Intel(R) Core™ i7-12700 (2.10 GHz)
  • RAM: 32.0 GB
  • OS: Windows 11 Pro v. 24H2 64 bit
  • Graphics card: Chipset-integrated Intel(R) UHD 770

The monitor is a:

  • 24" HP, ie the e243m model which I use at 1920x1080
    Regards,
    Topoldo

Hi,
It might indeed be a regression caused by an upgrade in msys/mingw, as 1.25.6 and 1.25.7 are virtually identical…

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I shoot Fuji (X-T2, X-T3 and X100VI) mostly on a fairly basic (8 years old) Intel-equiped laptop running Linux with 16GB RAM, and a 5 years old Mac mini M1 with 8 GB. On both systems I have no issues with performance in ART. So, the msys/mingw regression seems to be a reasonable explanation for slow performance.

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I noticed on my Windows 11 laptop, ART seems to run faster in a Linux VM than natively on Windows. I’ve done no quantitative testing, but it sure starts up faster, etc., even in a VM guest (VirtualBox) on my Windows host.