1. Auto-logout was implemented so people don't sit on the server. Queue times were pretty bad when the game launched because people would just AFK when they went to work or school, or I guess in your case to take 30+ minutes in the bathroom, making it even harder for the rest of us to get into the game servers. 30 minutes before boot is reasonable. Players demanded the SE implement an auto logout and they provided.

2. Interesting, my relatively crappy laptop (core i5 M450 and Geforce 310m) runs the cinematic mostly fine (just tested it, native resolution 1366x768). An occasional stutter here and there, but that might have been because I had a bunch of other stuff open hogging my RAM (Firefox, libre office, and steam). Not sure what would be causing it to run as you say, maybe your antivirus is reading the file checking for viruses or something as it runs the video.