Change Image Setting to 'Low Saving'.
1.
In the PretonControl Printer section find
the relevant driver and change the Image Setting to 'Low
Saving'
2. Save the new setting in the PretonControl.
3. On the client machine use the try icon 'Update Policy'
option to pull the new settings (if the try icon is not
available the new settings will only take effect after the
next print job).
4. Check the Print quality.