Are you playing poker for money or the social aspects? This is one of THE best things that can happen at any table you sit down at. The fish dont leave? They fight back, suddenly your whole table dynamic is changed and you have usually 2-3 people playing emotional poker in an attempt to 'beat' the others and 'prove' themselves.

Sit tight and take down the huge pots that their LAGGy play will allow you to. And continue to provoke them but dont actually get caught up in it yourself if possible.