Intermiten wipers

[Conn SVX]

What is the story with speed changing wipers. Mine are like every 4 seconds when standing still and go right to Med. speed at 40 MPH. I know I can turn off the Speed adjustment so it will wipe every 3 sec. or what ever. I like the feature I just wish i could control it so it never goes to MED. Is there another adj. that allows it to remain intermitten when you are driving or do you have to do it manually. WOW! now I am confuussed as to what I am saying.