We are now working on faster autosave!
I have just tested one large document, and we went down from 10s to 1.5s when autosaving after painting one layer. It will be available in new beta.
That's awesome looking forward for the update!
But I also noticed that sometimes even if it says "autosaving", but then the app crashes soon after, or I manually close and reopen the app, it didn't actually autosave it for quite some time. (Sometimes lost work up to an hour like this, sometimes just a few min, even though autosave is set to just 1min)
One way i go around this, is by periodically going to the document browser after it autosaved and then back to the canvas, or by saving it manually before closing it and just in between. Usually it only then, actually saved it to the current version when reopening the app manually or after a crash, or sometimes even after just switching between apps.
Not sure why that is, but I notice it mostly on bigger files.