I do have a south facing living room with floor to ceiling windows and today was a rather sunny day. It might have effected my calibration. Anyhow, they looked very good under the conditons at the time.I suppose modes like isf day and isf night are a no go for this model. Also, looking back at your settings, some of them seem a bit high. You might want to consider toning them down a bit. Just my two cents!
Plus Im so used to seeing QLED I would probably have set my settings to match what im used to seeing. At night I change the Picture setting from Vivid to standard at it drops the brightness quite a bit while retaining all the colours and detail.
I would very much like to try someone else's settings too to see how it looks