Cubase 14 - 'Auto Saves' amounts to a considerable amount of gigabytes

So, by fluke, I discovered that Autosave files are actually huge.

I couldn’t understand why a recent score with only a few cues ended up at 48 giga.

I looked closer, and it turns out that the .bak files are about 200k + bytes each.

A folder of 17 items ended up at 3.85 giga…why are these .bac files so big?

Is there a way to change that?

Older Cubase versions created .bac files that were about 2K bytes each… why has this changed so much?

I’m on Cubase 14 - Windows 10

Cheers

As far as I can tell, the only difference between a .bak file and a .cpr file is the extension–so they are the exact size that the project-file was at the time of the autosave.

Hmmm, you are right. The question is: why are the CPR files so huge? I am not using ARA at all…

And this seems to have started with Cubase 14…

Every new file seems to be saved at 300K +

So I did a quick test. Opened Cubase 13. Empty project → inserted an audio file (stereo at 48 kHz - 24-bit) duration, about 90 minutes.

I saved with both Cubase 13 and Cubase 14

Same thing, Cubase 13 file size: 126 KB

Cubase 14 : 1163 KB

No idea why…

I was messing with an older 2015 project a few weeks ago. I can’t remember the Cubase version, 9 or 10, maybe, anyway, whatever was current in 2015.
The original CPR is 4,668 KB.
The Cubase 14 CPR is 4,676 KB.
I just saved an empty Cubase 9.5 project: 80 KB.
An empty Cubase 14 project is 93 KB.
I would imagine the extra features since 9.5 would require some kind of place-holding structure(s) in the project file.
I do find though, that the more Kontakt instances/libraries I have in a project, the bigger the CPR. EG, the last track I uploaded here, the CPR is 28,148 KB.
I don’t use Autosave!
(All “Pro” versions of Cubase.)

Well, the culprit seems to be my template file which is about 340K. I did an update for C14 and it is now saved to 300K. The tracks I have in there are all disabled, I don’t know why is it such a large file?

I hear you. With big projects, data size can spiral out of control with Autosaves.

Hmmmm, definitely not thrilled about this.

Yeah, it seems to be related to the template.

Got ya…

So, I have to remove unused channels after composition is done, to slim down the file…cheers…