I have recently switched to Ubuntu 16.04 and I'm having problems with my wireless connection. I'm using a Broadcom BCM43142 wireless card and using the Broadcom 802.11 Linux STA driver.
The wireless connection always shows at low signal. Sometimes it works at adequate speed, but most of the time the connection is slow (much slower than on Windows in which I have a dual boot partition).
I have tried uninstalling/reinstalling the driver. I have also already tried disabling IPv6 and also tried to avahi daemon fix to no avail.
I've run the following wireless script and this is the output