I have trouble understanding how the "Go Stealth" command works. Browsing the manual, I got that you have to go stealth in dim-lighted areas and away from enemies' line of sight (and out of combat). But it seems to fizzle 90% of the time, most often I click the button and nothing happens for about 5 secs... and then the message "leaving shadows" appears (as if I had disabled it). Will these malfunctions disappear once I upgrade the stealth skill to full 100%? Thanks for any help.