Melco – copy speed – glacier-like slow / Your experience?

[Peter@57m]

Just did a quick test copying 20GB of data

Windows 10 PC (couple of years old Intel i7-4770)
QNAP 559Pro+ (quite old model)
Melco N1ZH with SSDs fitted

PC to QNAP low 80s MB/s
PC to Melco about 20MB/s
QNAP to Melco via PC about 20MB/s

So Melco speed similar to Simon with SSDs.
PC to NAS in between Simon and Lorenz