Actually, I was talking about about relativistic time dilation. I get most games have to scale time or it would be soooooo boring to actually sit through two weeks journey to the moon.
It would be boring so why would you want it? The way space travel actually works with real life physics is time is relative to your speed. You might travel for five months to the nearest star at just short of the speed of light (because in reality it is currently known that you can't travel at the speed of light), spend one month doing research, and then travel another five months back to Earth. For you, time would have remained the same. For Earth, though, several hundred years have past. The ONLY way around this in reality is theorized to be wormholes. On that note, I've been watching way too many space shows on Netflix...
As for the computers controlling ships thing, there's generally an assumption that civilization is always roughly moving forward even though cultures/civilization quite often tend to regress because of catastrophes and the like, eventually causing them to partially revert to older technology. This kind of destabilizing event is the basis for many futuristic exploits, such as Warhammer 40K (dark age of technology) and Firefly of the top of my head. :P
In Elite you travel faster than light with Frame Shift Drive - it bends time and space around the ship, kind of shrinking it around you, at least that's the lore.
As for AI - any advanced AI is forbidden in Elite universe due to some tragic accidents in the past where AI got out of control. Since then it was banned and is illegal in the game. Hence all the ships have human crew :)
Remember the dark ages due to the Church? That was 100 years of the Church stifling growth of our knowledge of science and technology. Just think if the dark age hadn't happened, where we'd be today...100 years more advanced than we are now! If you can't imagine that then think of everything that's happened from the year 1900 to 2000...cars, planes, computers, technology, medical advances, walked on the moon, space station...just where would we be if the dark ages never happened?!
To counter the auto pilot bit...people in the early 1900s thought that we'd have flying cars and wouldn't need soap or water anymore. I certainly do not have a flying car parked in my parking space. Do you?
Now to be fair, flying cars are actually a thing now...a long ways off from being in your driveway, but still a real thing.