I have a Samsung ecobubble machine and I always use the quick wash(15/20 or 30 mins wash)and then put it on the separate spin anyway(12 mins) I very rarely use the longer programmes and my washing is always fine. Only me and hubby so no really dirty washing like.kids mucky clothes/work clothes etc.
I started washing my hands in cold water and so at the start of the pandemic, when I read that the only way water could kill viruses and bacteria was if it was at boiling point. It’s the soap and length of time you wash for that’s important. Like many people it takes a while for the hot to come through and by then I’d just about finished washing them anyway xx
I turn the speed spin down in the summer. Saves wear and tear on the machine as well as a few pennies. Fabric conditioner coats the fabrics. Only use it for bedding so it smells nice. Don't get the point of paying cash and card. I rarely use cash as it means getting to a cash point.