I've got a Samsung ecobubble machine, not had it long and still getting used to it.
I put a full load of cotton t-shirts, shirts and underwear on to wash at 12.30pm. I selected the cotton wash at 40 deg. The display said it was going to take 3 hours 10 mins. I thought "that's a bit much but never mind, I want it all to have a good long wash".
It's now 32 minutes since it started and the display says there's only 47 minutes left to run. So that's more like 1 and a quarter hours instead of 3 hours!
Why? Why even have a display in the first place?