I did a speed test and my Comcast speed is 30 Mbps. I can use YouTube 1080 P easy, but my Netflix won't go past 480. Will it help to get comcasts blast 25-50 Mbps? I know my modem capability (doxic 2) caps out before 50 Mbps. I had blast speed before but I downgraded because I didn't think it was necessary for the highest quality Netflix. When I had blast before I noticed Netflix HD was working. if 25 Mbps is sufficient for the highest Netflix quality then what could the problem be?