I have a problem with my 43QN90C bought in July. I cannot see the bottom row of pixels unless my eye is almost level with the bottom of the screen. The bottom 3 rows are not visible frokm an angle of about 30 degrees. And this effect is not symmetrical. I have no problem with the top or sides.
I noticed this first only when using Windows 10 with the taskbar at the bottom. With my eyes level with the middle of the screen lines under running application were not visible. But it's also pain when editing images.
I'd welcome views (sic) on this from other owners as Samsung UK's customer service response was that it's all by design and within spec.
If anyone cares to test this I have shared a UHD PNG which when viewed full screen has a single row of yellow pixels at the corners, then 2 rows towards the centre, then 3 etc in a symmetrical pattern top & bottom, left and right
https://photos.app.goo.gl/gDDsHf4PJS7fmABPA
