Preview Mode Render Quality

Why is the game preview mode rendering at a quality level that is substantially different than the editor view? I see no shadows, no AA and lighting in general seems very different. The editor view is of much higher quality rendering than when I run the game. My video quality settings are on Ultra.

Do you mean on the Multiplayer Preview? You can change that with the Multiplayer Preview Settings button. It's to the far right of the Play button.