So I have a save game Blueprint type I use for storing replay/ghost data. When I try to load it from disk using LoadGameFromSlot, there is a gigantic memory usage spike and the Quest crashes. I've been testing with save files that are just ~30kb in size, and our game doesn't come close to the Quest memory limit, so I don't know what's going on. This works fine on PC -- no notable jump in memory usage. Nothing helpful is printed in the logs other than warnings about high memory usage.
It's worth noting that the save files have been uploaded and downloaded to file using an Amazon server. Since it works on PC, however, I think I can rule out some kind of data corruption related to this.