Anyone else here have a problem with sedating medications?

This morning I was so sleepy that I could barely drive. My eyes kept fluttering and I was drifting in and out of my lane. And this was after 9-ish hours of sleep! If I don't get a full 11-12 hours I'm a total mess. I'm not sure if I should blame this on the Seroquel XR or Saphris.