Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
I already tried to change the quality for print in PDF, the problem also occurs in XPS files.
Also if I use Adobe Acrobat or Bullzip the results are the same, bad quality in Publisher 2013, high quality in Publisher 2010.
If I open a file in Publisher 2010 I see excel linked objects in high quality, if I open a file in Publisher 2013 I see excel linked objects in low quality.
There is a display problem of low quality for the excel linked objects in Publisher 2013.
I don't have a good answer for you. Perhaps if you save the Excel object as a higher resolution image and insert it into Publisher rather than linking you will at least get the quality you seek. Yes, I realize that updating will be more tedious.
Is there any possibility that you can affect the object quality directly from Excel? In other words is Excel 2013 output lower quality than Excel 2010 and older? Is there a setting that changes that?
I don't know if this will be fixed or changed before the final version of Publisher is released to the public. From what I understand there is still a built-in method of submitting 'bugs' from each program that you might try. Look under Help??? With Office 2013 at the RTM stage I suspect you won't see significant changes to Publisher in the near future.
Sorry I am not of more help but for a variety of reasons I have opted to not install Pub 2013 yet and thus my knowledge about this version is minimal.
DavidF