DUMA OS 3.0 WIFI PROBLEMS AND INTERNET SPEED DECREASED

I FINALLY RECIEVED THE DUMA OS 3.0 AND I HAVE MIXED FEELINGS ABOUT IT. SEEMS LIKE MY INTERNET SPEED HAVE DECREASED AND MY WIFI DOESNT WORK AS WELL BEFORE THE UPDATE.  STILL HAVING PROBLEMS WITH IPV6. THE ONE THING FOR SURE THAT DOES WORK IS WHEN I DRAW THE AREA FOR SERVERS THAT I WANT TO CONNECT TO IT ACTUALLY WORKS. BUT I AM HAVING PROBLEMS WITH MY INTERNET SPEEDS. I HAVE THE 1GBS  SPEED WITH SPECTRUM AND I'M NOW AVERAGING ONLT 390 MBPS. A TECHNICIAN HAVE BEEN TO MY HOME TO FIGURE OUT THE PROBLEM AND THE MODEM AND SIGNAL IS WORKING PERFECTLY FINE. I WOULD LIKE SOME KIND OF ASSISTANCE.