Yes, No.
Street to house, house to splitter...one to tv other to cable modem, one to tv has a filter on it. I changed my splitter from a 2 to a 3. So now mine goes...street to house, house to splitter, one to tv, one to modem, one to tuner card. Works fine. I checked IP stacks before and after, checked ping before and after, checked speed before and after.....no difference here.