[rumelk]

Thanks for your replies.

MJPS:
I had the same idea too, so when making the second 30m cable it wasn't pinned against the walls but rather still in the roll, once connected to a pc, was still showing 100mb.

Jon T:
The entire cable of cat 6 is twisted tightly, but do you think by untwisting only by the clips is enough for it to drop from gb to 100mb?

Many Thanks