Steps I took that resulted in the problem:
Import Adafruit Fritzing Library
Place the permaproto half size (any other should do as well) board and add a few components
editing will become very slow and laggy
What I expected should have happened instead:
should be smooth and responsive
My version of Fritzing and my operating system:
0.9.3, Windows 10
Please also attach any files that help explaining this problem