Multi display 2nd screen half vertical resolution solved with 23.4.1 driver !
At last, 4 months after the 7900 XTX launch , the 2nd display bug which displayed on half screen in vertical is solved . I had to put this 2nd monitor in 3D mode and it was blurry .
About time! A feature that should of worked straight out the box, having to wait 4 months for a driver release, i contacted support telling them its a driver issue. Finally a fix, now onto the next issue.