[the8472]

The NVMe on other instance types is quite throttled. E.g. on a G5.4xlarge instance EBS is limited to 593MB/s and 20000IOPS while instance-attached NVMe is limited to 512MB/s (read) at 125000IOPS, a fraction of IO what a workstation or gaming PC with similar GPU and RAM would have. And stopping the instance wipes it, which means you can't do instance warmup with those, everything must be populated at boot.