Here is a list of how-to related to Microsoft Office products. It will be maintained and update regularly.
We have seen QTS 4.2.1 Build 0217 for TS-119PII but QTS 4.1.3 Build 20150313 for QNAP TS-253 Pro is different. The later support smb 3.0 in [Control Panel] → [Network Services] → [Win/Mac/NFS] → [Microsoft Networking] Tab → [Advanced Options] dialog] → [Highest SMB version]. Let’s see if it is compatible with OSX and faster.