Viewres and PDF Export

Years ago, we often played with the VIEWRES variable to reduce the load on graphics cards, but nowadays even a very high setting for VIEWRES viable. I just realized that the default value of 100 is affecting the PDF exports and making some unacceptable output. I also just realized that each viewport has its own VIEWRES setting. My current drawing has over 25 pages, with many views.

Is there an easy way to set all the viewports to a higher VIEWRES?

-Joe