Does this new setting in prefs mean that the deep prime rendering is now shown without having to use the separate preview tool? Actually found this in the docs - " * Enable DeepPRIME rendering: let’s you preview the DxO DeepPRIME denoise rendering in the full image displayed in the Viewer, whatever in fit mode or the zoom level (which may also impact the responsiveness of DxO PhotoLab)." So now we can have the deep prime rendering previewed in real time at last without having to use the magnifier - NICE 
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Yes. even more …
PL9 now supports viewing the results of image sharpening using the Lens Sharpness Optimization tool and the Unsharp mask at any zoom scale.
Pascal
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does that have to be turned on ?
I turned on DeepPRIME 3 rendering. Shortly afterwards I turned it off. It was like going back to PL3/4 performance-wise. On a much more powerful computer than I had then. It’s not “slow” to render, but it does take time and it’s visible. Often.
The large loupe, on the other hand, is snappy.
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Seems OK on my Win 11 rig with a 5070Ti and i7 - guess it mainly uses GPU ?
It was probably only a second or so, but that’s really obvious when I’ve been used to zero time during normal editing. I’ll take the minor hit when using the loupe, but when many different operations will incur that second, it’s a negative impact.
I’m not complaining. It’s amazing how performant they’ve got it. It’s just not for me until it gets to be unnoticeable. On my system.
I have tried it now and am impressed. I think I can live with it permanently on. It also seems like the pictures you have opened in “Customize” gets cached and when that happens browsing gets fast again.
This is not a draw back - it is a pure win. We have to compare this with having to open the Loupe Tool via the menu and pull the frame to the part of the picture you want to check.
It is often in these small things we find the most time saving improvements.
From what I can see just browsing the “Filmstrip” in “Customize” is instant. The same goes for browsing in “PhotoLibrary”-mode. I have had problems once in a while with that earlier. The problem with blank previews that I have seen from time to time is not there either.
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No, nothing to turn on. If you have a lens profile for your lens, Lens Sharpness Optimization will be available at any zoom level above around 25%. I am not certain it is available at 25%. It was hard to see the effects of sharpening at that zoom level, but perhaps it is. The same is true for the Unsharp mask, except, of course, that a lens profile is not required.
Mark
That depends what you’re referring to …
As Mark/@mwsilvers notes, there’s nothing to be “turned on” to enable image sharpening using the Lens Sharpness Optimization tool and the Unsharp mask at any zoom scale.
But, if you wish to have NR algorithms applied to the displayed image (rather than only via the Loupe) then; Yes - you need to set this in Preferences (on the Display tab).
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I have just read a tread complaining about how really slow denoising can be in the Adobe world (Camera Raw in that tread owners case) and there we don’t talk in single digits of seconds but minutes per picture.
When talking about AI-performance it is important to include all the aspects of it in our workflows - even denoising performance.
Most of these cases though were related to outdated hardware I would say as also is the case here many times - my own previous machine included. … and this isn’t at all the first time when backward compatibility gets ditched.
This is by the way nothing to when Intel and Microsoft with a joint venture three years ago made miljons of computers obsolete litterally over night. Then I was forced to buy the computer I now have replaced. It got three years before getting obsolete - then AI happened.
We can be upset over these facts but I see very little we can do about it when it happens but to stay put. We don’t always have to follow the flow. I still use Microsoft Office 2007 with upgraded importfilters and it still works fine. Next year it is 20 years since 2007.
I still can read what others write to me and they can read my texts. It’s nothing wrong continuing using old versions like Photolab 8 or earlier versions either, as long as it meets our needs.