We are experiencing problems with Freesound servers and as a result Freesound is being quite slow. We are working on it and we’ll try to find a solution as soon as possible, we’ll let you know.
Thanks for your understanding!
EDIT: FYI, during the last weeks we made a number of improvements which significantly reduced the number of slowdowns, making them almost inappreciable most of the time. Yesterday (15th March 2017), we were finally able to deploy a new set of changes which should make the slowdowns completely disappear and make Freesound faster.