Hello. I'm from Uruguay. Me and others are with "reconnecting" problems. I just lost a game because my connection was lost for 20 seconds. I don't know why is this problem. Even if the connection is ok the "reconnecting" windows appear. Is impossible to play a game with less than 6 minutes for the time it make me lost. And, it should be good to put a longer time to "force resign", at least for people in south america.
It takes way longer than 20 seconds of opponent offline time to force anybody's resignation here.
If Lichess is unable to maintain your connection for 20 seconds, try closing other things that use up bandwidth like YouTube or Myspace (or Google crap :D).
When this problems start (two months ago) I start to play with all bandwidth consumption things off. I change from firefox to chrome, and now back to firefox (in opera and midori doesn't work). It become a little better turning off the chat room (only sometimes).