I have a Synology DS213j which I access through a VPN via the build-in VPN Server (I use OpenVPN) using Windows Explorer.
Copying files to my local hard drive is very slow in the range of only ~170 KB/s. This seems to be limited by the Synologys CPU which is at 100%. Looking at the ressource monitor in DSM, it shows the smbd process takes >90% of CPU.
The NAS runs DSM version 5.2-5592. The Specs say it has a 1.2 GHz CPU. Shouldn't this be capable of more than this?
I read the DSM 5.2 versions have this kind of issue where they are to heavy-weight for older NASes. Is version 6 better performancewise? Should I downgrade to 4? Or is this not an issue in the OS, and can be solved otherwise? How?