frequent disconnections

I get the error message "Disconnected from the server. (0)" a lot recently, like systematically once per hour or even more frequently. Does anyone experience the same problem ? I don't know if it's relevant but it seems to happen a lot when I am a spectator in a game. The tygem client used to work great for me but these disconnections are really bugging me.

Thanks for your help, keep up the good work!
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