Hi, eventually I settled on Standard mode
Brightness and Contrast:45
Contrast enhancer: Off
LED clear motion: Off
Also in Power and Energy settings I turned off Brightness Optimisation and Motion Lighting.
I think any form of so called intelligent settings can produce inconsistent results sometimes.
Seems ok to my eyes although some colours are really vivid
On another note I’m finding the sound really poor, very tinny so I’m forking out for a soundbar!