Today I have a huge bottleneck in unpacking and moving. I’ve got 1gb fiber and can saturate it, getting a complete iso in just a few minutes, but then it’s another 30min plus waiting for that to actually be usable.

Are you doing this all manually or using the *arr suite? For me, this process takes a minute or two depending on the size of the files with Proxmox and ZFS but even previously on Windows 10 with SnapRAID it was quick.