Checking in changes from big project (245 tests, 10000+elements), the operation takes a couple of minutes to get done.

Steps for repro:

1. Connect to TFS from Test Studio (open TFS project)
2. Map it to some local path
3. Select all folders and project in Project Explorer and choose Source control->'Check in' from the context menu.

Problem 1: It takes more than 20 seconds to show the save file dialog and during that time no indication of progress is shown - application looks stuck

Problem 2: If you chose 'Save' it takes quite some time and no progress indication that something is going on.

Problem 3: If you confirm - it again takes quite some time and no progress indication is displayed.