Salo, I just wanted to say thank you for the transparency and relaying information, and the dev team for listening and trying to fix the issue. Hopefully these preventative measures will help at least some users from reaching the same point.
I've gotten the "space running out" message multiple times, so I had been religiously deleting all autosaves, quicksaves and some manual saves to keep my save storage under 1.5GB. Prior to Hotpatch #17 my console had 1 incomplete Honour Mode playthrough and 4 finished Balanced and Tactician playthroughs, accounting for 20-25 visible saves. These files totaled 1.14GB of space.
After Hotpatch #17, I started an Honour Mode save slot, and the save storage showed an increase to 1.18GB. I have reached the end of Act 2, and my ENTIRE save is only 0.04GB. To the Dev(s) who compressed these save files to this miniscule amount, this is AMAZING. YOU ARE AMAZING! Thank you!
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For those like me, who are worried about losing your saves, I signed up for a
Larian account and activated Larian's Cross-Saves. The game has synced my 10 most recent save files. The first time I used the feature, it took a few minutes for all the saves to upload, just be patient. You do not need Playstation Plus to use this feature. I appreciate knowing if my game gets corrupted at any point, I have the option to delete the entire campaign from my device, then try to reload the file via cross-save.