Hi Kford,
Do you store Visualizer images in your project? There is a known limitation related to the bad performance of the check in and check out operations when large number of images are stored. Please refer to the Integration With Microsoft Team Foundation Version Control ( http://smartbear.com/viewarticle/78379/ ) article to learn how to avoid this issue.
We tried removing some visualizer files like the article states and we still have this issue.
Thanks for checking this. In this case, I would suggest that you submit this issue to our Support Team ( http://support.smartbear.com/product-list/ ) to investigate it.
