The 256GB and 512GB Steam Decks are advertised with faster storage (NVMe SSD) than the 64GB version's eMMC internal storage. But I read that the eMMC storage read times are more or less comparable with a decent SD card. Under what circumstances is the NVMe SSD noticeably faster than the eMMC or SD card options? If there have been benchmarks for this, they're buried under a lot of other press.