[copwriter]

On my 2019 Touring, setting the ACC speed with the "RES/SET" switch increases or decreases the set speed by 5 MPH if the speed is already set at a multiple of 5 MPH. If it's set at something more or less than a 5 MPH increment (as with pushing "SET" when the actual speed is, say, 23 MPH), then the switch increases or decreases to the next 5 MPH increment. I can change the speed settings very quickly with this method.

 

[copwriter]

You can set the cruise control +/- 1 mph by holding the increase/decrease button. So you can set it to 65 mph, then hold the up button and it will start to increase by 1's.

There is a way to use the old type cruise control (although why is another question), I googled it:

Can you turn off adaptive cruise control Subaru?
To disable Adaptive Cruise Control and switch to standard cruise control, all you need to do is press and hold the “set distance” button on the right side of your steering wheel. Continue to set speed as you usually would.Jan 23, 2019

I wasn’t aware of that setting. Thanks for posting that.