"5 minute incremental saves with large files would quickly fill up disk space."
😄 😄 😄
Then you've misunderstood; fortunately, the disk never fills up with the method I wrote about. It's worth reconsidering what I've written, then you won't describe a mathematically non-existent problem.
So, you're saying that if there's a save every five minutes, the disk will fill up. It doesn't matter how often the save occurs, whether it's every 5 or 10 instances. Especially if, out of those 10, 5 are older v
...