Lead equals lag

Every time I get the lead the game starts to lag, my players don't pass as well my ping goes from 15ms to between 146ms to sometimes over 1100ms.  It has happened so often that I thought it must be my connection but everything is running fine when I checked my routers interface and then kept noticing it only happens when I get the lead.  I mean it could be that my network just notices my lead and then screwing with me but I think that is now what is happening.