You might try the SketchUp 2014 Make version.
It is OK to keep more than 1 version installed side by side. (I have 4 versions installed because I do testing.) You’ll just need to back save to v14 format.
You might try disabling Hardware Acceleration in Preferences > OpenGL.
Close and restart SketchUp after making settings changes. (Many of the settings only get written into the registry when SketchUp shuts down normally.)
This also may include the Print settings. So yes save your model before printing, then close and restart SketchUp after a successful print task, so that the print settings under the “SketchUp 2015” registry key get updated.