I hacked my gamepad
Drilled two holes on the triggers and plugged in two toothpicks (actually one, I broke that into two part) and now I have shorter triggers. Now I can have the Xbox Elite controller... 's trigger stopper function.
Hopefully this can help me better at some games. I can always pull those toothpicks out if I want longer triggers, and once they didn't break, I'm fine (otherwise it might be tricky to get them out).
Unfortunately, this won't work in Fallout 4 because most guns have a long trigger, unless I put an upgrade to the gun reciever, or use a mod to remove such feature in game. Well, it's so smart that Bethesda can come up with such idea to use the trait of triggers on the gamepad.