Oh it is? I guess I should play around with it some more. But I had a game that was always left on default, then while docked I changed it to 4k. But then later on after playing handheld again for a while I checked again and it was still listed as 4k in the properties so I kinda gave up on it.

It’s also annoying that it seems that the setting applies to both the internal display and the external displays. Not sure why it can’t be separated