Is the SmartByte issue back? I started to have it with my Intel AC-3165. It limits the internet speed to 4-5 Mbps (from 30 Mbps available), exactly the same symptoms as multiple people describe here in multiple threads, but the problem on my side is that i don't have any SmartByte installed nor any SmartByte or Rivet service installed and i still have this issue. When I plug some D-Link USB Wifi card and deactivate the integrated Intel board, the internet speed is not limited anymore. I'm already going crazy by this issue. I have been removing both wifi and bluetooth drivers and installing very old ones as well as the newest but nothing helps. Even uninstalled the Dell Support Assistant and any other Dell bloatware but no luck. Can someone help me?