What's the deal with the constant redrawing of rasterized images in SW 2016 drawings?  Each time I change the zoom level (mouse wheel scrolling), the entire drawing has to redraw like Google maps...  This either didn't impact 2015 or didn't happen in 2015.  My attempt to describe the behavior says, "2015 used vector images for drawings, 2016 uses rasterized".  The update time is painful...

Zooming in:

After "redraw":

and...

Zooming out:

After "redraw":

Any ideas?