TL:DR - Please provide an option to disable compress on save for Autoback but keep it on for manual save.
When working with large files it's better to compress on save for file size reduction.... eg: 600mb file down to 100mb is great.
However, this makes it impossible to work with Autoback turned on as it will take a huge magnitude of extra time.
Autoback is great to have but impractical to use with compress as it disrupts your work heavily.
Being able to disable compress on save for Autoback would be fantastic as you can leave it on and not be interrupted in your workflow.
As a simple test.... the same scene:
Compress on save turned OFF - 750mb @ 21 Seconds
Compress on save turned ON - 188mb @ 116 Seconds
Now that is a huge difference, in both file space and time required. That's a 450% increase in time required.
I think it's totally fine to wait for it compress when I'm happy to do so... but obviously, this doesn't work with autoback.
There's plenty of space for a small checkbox under Auto Backup in the preference dialogue. If left unchecked by default that would work for the majority of users.... power users can easily enable it they want.