When I begin writing, EAC stops suddenly with an error, sometimes with no additional informations, what can I do?

EAC does not support all writers yet, so it is possible that EAC just do not work correctly with that drive. Further it would be possible that something in your system will break the stream to the writer, resulting in a buffer underrun. Make sure that there are no other applications are running while writing.
If could try to switch the sync data transfer on for the writer, you could find that option in the Windows Device Manager (System Properties), there select the writer and show up and edit the properties of that drive.