as with any ATC set temp....it would add more HOT or Cold to achieve the set temp....
sometimes its a benefit, when requesting HOT/WARM water...it will purge the line until the HOT water gets there......I always purge my lines at the sink before starting the machines...
then again none of my machines dub down that far....except the Cabrio, but a HOT wash will only drop down 10 degrees from the water heater setting...so far, I can't complain....
on the Cabrio, while you can't turn off the ATC, certain cycles(heavy duty, whitest whites), as well as turning off "energy save" and "eco boost" will give warm to hotter washes...than something like Casual or Delicate/Handwash...but you also would see changes in wash times and wash pattern....
try to override where you can, but sometimes it doesn't always work...