[ubuntu] Broadcom - Extemely slow to no wifi

Hello !

I am a new ubuntu user (kinda), just switched my OS from windows 10 to Ubuntu 16.04 but huge problem : after installing bcmwl-keel-source to be able to use my wifi (broadcom), I am able to coect to wifi networks but the coection is incredibly slow (around 100 B/s and huge packet loss %).

I've been looking on inteet for three days, trying common fixes such as the avahi daemon one or disabling ipv6/11n but nothing did the trick. So here I am begging for help, I download the script from Wild Man/Krytarik and chili555 to give informations needed.

I can't use an etheet coection but I have 2 laptops on my hands, the one under ubuntu and the one I'm using right one under windows 10, both using the same network, with window 10 having a great wifi coection. By the way, those are paid public networks (holiday, not at home)

Thanks !

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