Mama, don’t be worried

... maybe it sounds straightforward but the Cable Pin Out needs to be respected if you want to acheive 1Gbps speed with Cat 5E or Cat6 cables. If you don't respect it you'll be stuck to 100Mbps.

It seems like the position of each cable within the twists makes a big differences? Especially the blue cable which is put on the 5th position.

Anyway, more information about the Pin Out here:

http://www.ertyu.org/steven_nikkel/ethernetcables.html

or here is the diagram: