Obviously the greater the number of machines sharing the same connection the slower it will be for each individual computer. Is the slowdown dramatic with the seventh computer? Is it always the same computer (have you tried turning them on in a different order)? If so that would indicate a probable hardware problem with the NIC on that computer.
Obviously the greater the number of machines sharing the same connection the slower it will be for each individual computer. Is the slowdown dramatic with the seventh computer? Is it always the same computer (have you tried turning them on in a different order)? If so that would indicate a probable hardware problem with the NIC on that computer.
your provider may have a limit on how many computers can be on that one service and as said above with that many computers if running at once theres a bandwidth use issue