So the Comcast technician came out again yesterday and said, “Everything at your house is fine. It’s up to the line guys now.” When prompted about changing out the modem he implied that it wouldn’t do any good. He also said it was a coincidence that the splitter made any difference that Comcast’s “equipment is designed for their system.” Apparently today the line guys will be out to look at the wires on the poles. Let’s hope they find a problem and fix it because this is beginning to impact my work.