As someone else said, the SPEC multiplier doesn't work. Here's my brand new save.
My process was: Launch the game, ALT+Tab to trainer and turn it on, set multiplier value to 2, hit the lock (didn't matter if it was locked or not), proceeded with the start of the game, became friends with Dorian, only got +5 like normal. Tried the same with a different save with a different character (Beau) and it still didn't work, so I don't think the tutorial is the issue.
That option is removed because I couldn't fix it, I'll take a look at it again when I got time.