issue with samsung odyssey g5 pixelated video quality

[aj2551988]

Hello Guys, 

I have recently purchased Samsung odyssey g5 and getting pixelated video or image quality when there is any dark area or scenes. Is there anyways to fix it?? attached some screenshots. Please help me.. 

[ZRFL]

i have the same issue and after i call samsung greece service they told me  it is normal  and even if i have warranty i must pay 40 euros for the technicians too look at it.  is this normal behavior on samsung greek service policy?