It won't make it faster (wall time), but it reduces your effort to virtually zero. Dump the steel cut oats/milk/water in, push the magic button, and come back in 25 minutes. I've been eating this daily for breakfast for a couple years and it's great.

No continuous stirring to prevent scalding the milk, no slightly burned milk welded to the bottom of your pot, etc.

The recipe I like, fwiw: 2 parts (I use 1/2 cup) Bob's Red Mill steel cut oats; 3 parts whole milk; 2 parts water. 10 minutes on high pressure.