Ok, next couple of ideas

• Eco Settings > Power Saving = Turn it OFF

Picture Display Settings:

• Turn OFF - Reality Creation
• Turn OFF - Video Area Detection
• Turn OFF - Advance Contrast Enhancer (in advanced Settings)
• Turn OFF - Auto Light Limiter (in advanced Settings)
• Turn OFF - Live Colour (in advanced settings)
• Have a look at other settings to see if it would be suitable

Double Checking:

• You did turn Light Sensor OFF didnt you?
• Picture Mode = STANDARD (Instructions : HERE)
• Scene Select = GENERAL (Instructions : HERE)

Fingers crossed

Cheers