Jem, I found the fix to your issue. Simply cancel Gigablast. Im not even joking, I went through all this BS for almost a week. I was getting around 400mbps and thats tweaking all the settings in my adapter card, changing all the coaxials, you name it I done it. So I downgraded to the ultimate which is up to 500mbps in my area and guess what? Same modem just different plan and my speed went down to 250mbps (WTF right?). I canceled and went back to the preferred 150, you get the most bang for your buck and not paying for what you're not getting. Cox gigablast is a hoax.
