I am having quality issues with the PDF after it is made from AutoCAD. First, I'm creating a few spreadsheets using Excel. I copy/paste them into AutoCAD and when I go to print the sheet to a PDF and view the preview before i submit it, the preview is great. Once i make the PDF one of the spreadsheets' quality is great. The others are showing extremely blurry and sometimes pixelated. Im not sure what would be going on. The spreadsheets are created the same way. I'd attach a screenshot of the issue, but the wonderful "attach image" button is not working. As a matter of fact, none of the tools for this post works.
More than likely it is in the PDF creation end of things. If that's the case, you'll want to go to the forum for the software you are using to create the PDF.
Before that, one thing you CAN check in Reader is Preferences>Page Display>REndering and be sure that smoothing preferences are checked.