Pronlem: Wifi is considerably slower (transfer rate) after sleep. This is new since I upgraded to 10.11, I never had this issue with 10.10 on the same machine. I'm using a BCM94352Z connected to a 802.11n router at 300mbps on a 5GHz network (link speed as reported in OSX is the same before and after sleep). I use FakePCIID and the BCM94352Z_as_BCM94360CS2 injector. On a fresh boot, I'm seeing 12MB/s transfers to/from my NAS. After sleep, this goes down to ~1.5MB/s. I see the same issue with internet speedtest: 50mbps download on a fresh boot (ISP bound), but only 10mbps after sleep. I tried turning wifi on/off, switching to the 2.4ghz network and back with no success. After sleep, my wifi seems to be capped at ~10mbps no matter what. As soon as I reboot, it is back to full speed. Any idea where to look? Besides this speed issue, the wifi works fine after sleep (no disconnect, comes back on as soon as I turn the laptop on).