Yes, a long bus is like a resistor-capacitor delay circuit. You can speed it up by using a bigger driver for more current, but that takes up more space and adds

Yes, a long bus is like a resistor-capacitor delay circuit. You can speed it up by using a bigger driver for more current, but that takes up more space and adds its own delay. I expect that the bus in the Xbox is split in two, with a second driver in the middle. This makes the first half faster, but the second half of the bus probably takes another clock cycle, which would explain the observed behavior.