[Zubersoft]

Then I'm not really sure I understand the nature of what you are seeing (I would need to see a video). If you tap the pen tool to view the dropdown, there is a "Smoothing" dropdown. You would want to set that to "Minor" or "None" if you don't want your drawings modified. Minor will use far less data in the database than "None", but should present a nearly identical result, so that's usually my recommendation. As far as differences between portrait and landscape, in the settings, there is a "Scale tool sizes in landscape orientation" setting which tries to resolve issues with the size differences when rotating. I'm not sure if that's the nature of the problem you are having or something else.

In regards to the freezing, in the annotation settings, please uncheck "Allow editing of embedded PDF annotations" if you have that enabled.

Mike