I used to have that problem and getting Google Chrome helped a lot and also shutting off that HD function. Now I have Windows8 and they play just fine. At least for the time being.
Originally Posted by
debcavan
It took me a half hour to view 15 minutes of a class. I was frustrated. So I clicked on help. I don't remember what the first thing was. The second thing checked my speed but then the third thing did it. It had a Take off High Definition thing to click on. I did it and now my classes are running so well.