tim_bailey_65b2jjtbxug3t's profile

6 Messages

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180 Points

Tue, Jun 23, 2020 5:36 PM

Lightroom Classic: Revert Slideshow Module to previous method of generating previews

This concerns the slideshow module in Lightroom Classic. Previously, when new folders were added to my catalogue, and I wished to view them as a slideshow, for the first time there was a delay while the slideshow previews were prepared, but for any subsequent viewings, the delay was minimal.


Following the latest version of LrC a few days ago, every time I wish to view a folder, there is a lengthy preparation time. The only way to avoid this is to use fn F to view a manual slideshow using the arrow key to move forward. I want to let the show progress automatically with a standard display time.


Your Help Team have told me that this is now standard in the latest version of LrC. This really is not acceptable in a supposedly professional application, and a very backward move. I use LrC daily, and need to view my photos frequently. I cannot wait 2 minutes or more before each folder starts to play. Please address this issue as soon as possible.

Employee

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113 Messages

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2.1K Points

1 y ago

Tim, Does the time to prepare the slideshow also include the time to generate the previews? Can you ensure the standard previews are created for the images in the Slideshow before trying to play the slideshow? 

6 Messages

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180 Points

1 y ago

Yes, the time is taken up in preparing previews. The slideshow does not start until the previews complete, maybe two minutes or more depending on the folder size. 

Employee

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113 Messages

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2.1K Points

1 y ago

Thanks, Tim for checking.

Generating the standard previews will ensure the slideshow applies any edits or presets to the images, so they look as expected in the slideshow preview as well. If you had already generated the previews, it should not take much time when generating the slideshow. Could you please check if that is the case?

6 Messages

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180 Points

1 y ago

In Slideshow, if I press the preview button, it prepares the previews. But then if I press play, it prepares the previews again before it actually plays. Before the recent update, once the previews had been generated the first time, there was no delay with subsequent  viewings. The person who replied to my chat enquiry said that this was standard on the latest version of LrC.

Employee

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113 Messages

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2.1K Points

1 y ago

Yes - that is the new behaviour. Though, if nothing has changed in the images, and previews are already available, the preview task should be completed quickly.

I have raised your issue with the development team, and we are trying to see how this can be addressed.

Thanks for reporting, and appreciate your patience.

1 Message

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82 Points

Please get it changed back - it is very frustrating - I use it to give talks but cannot do so now.

40 Messages

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628 Points

1 y ago

That's absolutely not true - preparing 200 images takes several minutes even on a modern machine (6-core, 32GB, eGPU).  It looks like it's rendering them from scratch every time, and after the progress bar makes it to the full count, then we get a spinning beachball for another minute or so before the show starts.  This is a deal-breaking bug. I've downgraded Lightroom to two versions ago when it worked as expected, which then eliminates all the bug fixes for performance on the 16" MBP.   Fixing it should be simple - revert to the codebase that didn't have the bug! 

40 Messages

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628 Points

1 y ago

And just to be clear - I've generated standard and 1-1 previews in the library module, and in the slide show module, and there's is absolutely no difference in performance before or after doing so.  9.2.1 was the last version that worked.  Please just swap  out that code for the new code and give us a module that's functional again.

1 Message

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64 Points

1 y ago

Repeating as suggested by @Todd_Shaner what I wrote in a separate thread:

Recognized this problem first with LRC version 9.3 on Window 10 and hopefully did update to 9.4, but there's still the same problem. Every time I press "Play" or "Preview" in the slide show module, LR is preparing all the pictures one by one and slow as usual as it is since LR 5.

 It's like it doesn't cache the previews anymore. Cache is activated and may use up to 10 GB of space.

 As it turns out, this is just happening with files in TIFF format (at least on version 9.4). Slide shows from raw files in RAF oder CR2 format are cached and processing happens just once.

40 Messages

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628 Points

@erwin_burgstaller Happens with JPG's too.

Champion

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2.4K Messages

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39.2K Points

1 y ago

I can confirm it is also happening with JPEG files, but not with CR2 files.

6 Messages

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180 Points

1 y ago

A new version of Lightroom Classic downloaded today, but no progress on the slideshow issue! When will this be addressed and corrected?

40 Messages

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628 Points

1 y ago

Any word if the release today fixes it?

40 Messages

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628 Points

1 y ago

And answering my own question - no, it doesn't.  And apparently there's no way to keep old versions of lightroom like there is for photoshop - boo!

6 Messages

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180 Points

1 y ago

I have just downloaded v10, and as feared nothing has changed on the slideshow issue. It still prepares previews every time, with the long resulting delay. Why are the previews not saved as before, so there is no delay after the first preparation? Why is no priority being given to fixing this basic problem? Adobe keeps issuing updates with obscure new features but won't fix a basic issue. Administrator, please convey my concerns to the people who have responsibility for Lightroom features.

14 Messages

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254 Points

1 y ago

Sadly, Adobe doesn't seem to care about this issue.  I have the same problem on this end, and it's extremely annoying.  After being an Adobe customer since version 1 of Photoshop I am now looking for alternatives.  Adobe is a broken company that does NOT listen to it's customers.  Very sad for what was once a might powerhouse in the graphics arts industry.  

12 Messages

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164 Points

10 m ago

If I import  450 jpeg files (10-20 MB) and then create slideshow it takes about 3-4 minutes until the slideshow starts. If I then export these fotos as DNGs (10-20 MB) the creation of the same slideshow takes 2 seconds. In the former version of Lightroom Classic I had no problems with the creation of a slideshow (regardless the format jpeg, raw, DNG). I think a bug has entered the new version of Lightroom Classic.
Note: This comment was created from a merged conversation originally titled Lightroom Classic: - creating slideshow extremely slow

Adobe Administrator

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10.9K Messages

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143.5K Points

I've replicated your results and have a suspicion on the reason but I've forwarded to the Developers for comment. Please stand by. 

Adobe Photography Products

Quality Engineering - Customer Advocacy

12 Messages

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164 Points

Thanks a lot for your support

12 Messages

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164 Points

@Rikk Hi Rikk, did you already get some response from the developers?

Adobe Administrator

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10.9K Messages

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143.5K Points

I pinged them again and they responded with more information. 

The current behavior is as designed. The preview generation now happens every time, though it should be quick if all previews are already present. A DNG contains a rendered preview that is leveraged in the Slideshow creation.  That is what makes it faster.  

We are looking to add some sort of option for users to be able to control this better in the future

Adobe Photography Products

Quality Engineering - Customer Advocacy

12 Messages

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164 Points

Thank's a lot for your efforts. I hope that it will be changed in future.