We believe that this is a "Memory Problem" and is best solved using the Sheet Layout Workflow - even if you just use the Simple Drafting Templates that I have posted on the forum recently, that workflow will give better / higher quality results every time and you will not see this issue that you see with the Plot Box and Print Preview / Print Process. The Sheet Layout Process also gives you the ability to add Title Boxes, Company Logos etc fully automatically and it is just as quick if not quicker to generate the Sheet Output on a PDF File.
If you want to share your / a project with me I can take a look and see if it is doing the same thing on my Laptop as well, however we have seen this before and it appears to be hardware dependent more than TBC specifically related - if we can address the issue we will, but the Sheet Layout Process is the way to go from my perspective - other users that have followed this suggestion are all happy with the Sheet Layout Process - especially if they use the simple Drafting Templates approach.
Here is the link to the post I made previously
Alan