I have been alerted that the waiters, waitresses, ...

I have been alerted that the waiters, waitresses, and cooks have all been complaing and "gossiping" about me and some others that I dine with. Great food, but it disappoints me that the staff is talking about us for "not tipping enough" when the service was inferior. also, we have tipped almost 100% in the past. I now feel uncomfortable to come to the restaurant with my friends.