[CLIENT] Spectator mode fails

Hello,

I love to watch games from all elos using Spectator Mode. Recently, I seem to experience a sort of 'lag'; games freeze for seconds, and then continue in an explosion. However, sooner or later, I also get a warning "Spectator data unavailable. The game will now exit." or "Unable to download spectator data". I also got a "Request failed" error once. I only have problems while spectating, not while playing. My internet connection seems to be fine. I'm not sure if it is my client, or connection, or the server, but I hope it can be resolved!