Downgrade possible?

Server Version#:1.40.6.8849

Is it possible to downgrade a version? This version is running less smooth on my synology NAS then the version before (8820). Probably because of the intel bug.

On Synology,

  1. Uninstall the current version ( On DSM 7, select the KEEP --first button – Option)

  2. Manual install the desired version

  3. Give it an extra minute or two to adapt after ir starts up