If you think your Internet is absurdly slow, like 1990s dial-up slow, you may be painfully correct if you live in one of four major cities that suffer from some of the worst Internet connections in the country . According to researchers at M-Lab , which gauges Internet performance using their own suite of tools, AT&T customers in Chicago, Century Link users in Seattle, Time Warner Cable Users in New York and Verizon users in Washington, D.C., experience some of the most offensive speeds for loading websites and other Internet services in the entirety of the United States.