Hi, thanks for your reply.
Regarding that I did made some tests on the beginning of this thread and with CT drivers I had around 300Mb. When possible I will try with no CT drivers. I use Iperf3 for that tests.
Btw, with a new Desktop PC that I assembly for a friend, with a entry level Asus Motherboard and Windows 10 I get with Speedtest, trough cable and NAT, 515Mb, the maximum that I get from my Internet supplier.
With my best regards
CGR