i think this problem occurs on openspy side cause sometimes it works fine.
Ye it happens a lot to me, I get these like 5-10second freezes when i start up or i get disconnected from openspy, or sometimes i cant even see some people in lobby which are in a game.
If I leave a game and go back to the lobby, It freezes for 30 seconds, And when It unfreezes, I get disconnected and encounter the "Unable to connect to GameSpy" message.