Hello, Robot battlers!
Changing your notrump range and distribution is the best way to get swings. I’ve got a dozen hands for you where I opened 1NT with 14 HCP. Some of them were balanced, and some were unbalanced (a singleton). Most of the time I get good boards doing this.
I have actually started opening 1NT with 13 HCP,
Lastly, I have posted a video for you.