disable back and recent buttons or turn down sensitivity.

I am having issues with the touch sensitivity of the note 5. The screen and capacitive buttons (back and recent apps) are simply TOO sensitive.

is there a way to disable these buttons in games or rather bring down the sensitivity down a bit?

for example when I am playing a game this i have to hold my phone in landscape mode. my thumb would always sometimes touch the "recent apps" button and it will bring me out of the game.