Man, it's just not there.

[Kamog]

Same with me. I used to play SEIV sometimes almost continuously for a whole day or more. With SEV, I couldn't do that because there's still some little annoying things about the user interface that start to bother me if I keep playing for more than a couple of hours. SEV has improved tremendously though, from when it was first released, and it is becoming more and more enjoyable to play, and I could it play it for longer and longer before I have to stop. The patches and Captain Kwok's Balance Mod have really made things better.