[MacOs.13 M1/Photoshop.24] Saving 16 bit PSD documents take so much longer w.r.t 8 bit PSD

I have rehashed the test beginning/shutting photoshop for the 8/16 digit report, with a similar outcome.

I have attempted to save to PSB and Altercation design, with a similar outcome.

@D Fosse actually it is the opposite, disk space is not a concern for the very few files that remain 16 bit all through the workflow but would be a concern for the terabytes and terabytes of files on our server, 99% of which are 8 bit and compressed. That's why an 8 bit compressed + 16 bit uncompressed workflow would be ideal and if we could have all users' machines do that automatically it would be a great advantage in avoiding the several minutes long saves that discourages us from using 16 bit in situations where it might make sense.

As far as 16 bit smart layers saving time when embedded in an 8 bit file, the way it is an advantage is when say you have a gradient background as a 16 bit smart layer embedded in an 8 bit file. You can open the file and make a quick adjustment to the normal non background parts of the file (like the figure over the background perhaps) and save. Since the 16bit smart layer was unmodified (never opened and saved) the actual file save is quick (8bit speeds). When modifying a dozen files like this to make a minor change on each of them, the saving takes almost no time, but if they were 16 bit through and through, saving a dozen files like this for a minor change in each would take a half hour under deadline.

I'm wondering if defering to the GPU for saving would help in that matter, similar to what Lightroom/ACR can do.

To be honest, I don't understand the problem. Work in 16 bit uncompressed, and everything is fast and snappy.

If you're concerned about saving disk space, you just have to accept compromises. If not, there is no problem.

A 16 bit smart object in an 8 bit master document is still 16 bit data that you need to save, so I don't understand the logic in that either.

We run into this all the time and many of us at work are doing all kinds of workarounds to avoide saving in 16 bit even when working in 16 bit (i.e. 16bit smart layers in 8 bit docs, rendering and merging curves in 16 bit then converting to 8 bit and saving) but all this is time consuming and sometimes results in reduced editability.

Is there a way to automatically save 16 bit files uncompressed and 8 bit files compressed? This would be ideal. We can save and move larger files much quicker than Photoshop can compress them to smaller files.

Yes, as the others said. The real slowdown here is the compression. A 16 bit test file here went from less than a second uncompressed, to 27 seconds compressed.

8 or 16 bits just exaggerates it, because 16 bit data are harder to compress. Keep in mind that compression is CPU-limited, not disk-limited. It's just a lot of numbers to process before it can be saved.

Photoshop reports the size of the open and uncompressed file as it sits in memory, not the packaged size of (the compressed) file on disk.

You have created the most difficult to compress... so since 16 bit compression is much harder, so you've made a bad problem worse...

Hi, I get similar timings on a moderately powerful Windows Laptop, with lots of other stuff running.

It is a known fact that the 16 bits files do not compress as easily as their 8 bits counterparts.

Rember that the file size is the size it takes in the scratch file, and might not be related to the size once saved.

Do you have maximize compatibility on?

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