Be specific -- what parts of Lightroom are running slowly?
Also, please state the version number of Lightroom and exact operating system version number.
I'm hoping this answers your question.......
Software OS X 10.9.5 (13F1134)
Adobe CC 2015.2.1
Camera Raw 9.2
And the whole program freezes as soon as it's opened. So it's not specifically any one part such as the 'library' or 'develop' module. However, there are moments when I can download a photo and begin working on it in the 'develop' module before it starts freezing.
It could be due to the graphics card issue. Would suggest you to follow the steps mentioned in this article :