Samsung QN900C ( 65 inches ) questions

[Sphynx]

Hello, I'd like to ask some questions about the Samsung QN900C ( 65 inches ) compared with the QN900A

1 - Native Contrast ? 

QN900A has  1,658 : 1

2 - Subpixel layout RGB or BGR  ?

QN900A is  BGR

3 - input lag ( 8k - 60 Hz )

QN900A has 10.6 ms

Thank you in advance

[Sphynx]

No idea, guys ?

[Looking at blackness]

My 8k 65 inch Samsung tv went out I paid too much money for this tv to die like this. I need it recaled and replaced with updated model