I'm using a 2013 retina MBP with Yosemite 10.10.1 I can download stuff on torrents at 700-800kbps (over wifi). That's fine. But my safari browsing speeds over wifi are considerably slower. For example, Youtube videos should be loading fast enough to just play the whole video but I often have to pause 4 minute videos in the middle to enable the rest to load. Websites take a few seconds. Any suggestions?