The slider only affects how many systems are you willing to detour before AP takes you through system that you don’t want to go through.
For example: If I chose route from A to B and set autopilot settings to “prefer less secure”. Moving slider all the way to right will try to plot route only via lowsec and null no matter how many jumps it will take.
Same goes with “prefer safer”. It will try to stay in hisec even if route will take insane amount of jumps. Showing lowsec and null system only when there is no other way past them.
Moving it all the way to left pretty much plots shortest route.
