BCM4352 [14e4:4315] can't provide stable connection.
This card comes preinstalled in the new Lenovo Edge 15 at least.
I have recorded some important information (problem detailed description and dmesg logs) in a post to the archlinux forums [1], and I wanted to see how could I help to make this device work in linux.
(I am not subscribed to this list, please reply-all)