It was a manufacturing issue. Two of them in a row with what resembles a piece of hair on the bottom left!

And there's only HDMI.

I wish it had Display Port like my HP Omen 25 does (Looks like a TN to me) (It does 144 Hz)
Surprising. It's a low-end Samsung TV, but I expect better of them.

HDMI ought to be fine, although I admit that I'm not using it. (My LG monitor supports HDMI).