Wi-Fi SLOW as F@#$%&

Hi guys, since a few days ago, my Wi-Fi it's super, super, super slow and I don't know why...

I changed the rom and FW but it's the same, (Lollipop and MM).

Does any one know what's is going on?

Speed test on my phone

https://www.dropbox.com/s/88843o83nk...10-06.png?dl=0

Same test on a Note 2 and and Moto X

Note: https://www.dropbox.com/s/kpihq1q34h...09-35.png?dl=0


Moto X:

https://www.dropbox.com/s/n72c75ps64...09-56.png?dl=0

Saludos y gracias