Finally some option for me to  leave ADSL behind , but here comes the
"Curious case of Fiber to the apartment block" terminated with ether100mbps
to my computer.

http://www.dslreports.com/speedtest/28751645

My NIC is configured to only 1/1 buffers, then MTU 1492 (increased of
default 1480), PPoE login  with Windows 10 using CUBIC.



ISP site with prices in BRL:
http://www.ole.net.br/site/condominio-internet/