In Windows 7 Pro 64-bit Windows Explorer, under Favorites, I have a link to Dropbox and Google Drive.
When I click on these folders, it takes about 5 seconds to open.
I know this is a first world problem, but I find it interrupts my flow.
When I click on any other folder on the C drive, it takes about 0.5 seconds to open.
The C drive is a Samsung 840 EVO MZ-7TE120BW 120GB Internal Solid State Drive.