Questions about Samsung QE55QN95A

What is the input lag?

I am interested in the TV, but the cable length of the One-Connect-Box worries me.... The 5m cable is available as an accessory: https://www.digitec.ch/de/s1/product/samsung-vg-soca05xc-kabel-tv-zubehoer-16007613#gallery-open Unfortunately, that is also too short... In theory there is also a 15m cable: https://www.digitec.ch/de/s1/product/samsung-one-invisible-connection-kabel-tv-zubehoer-11056841 To me the cables look identical and I suppose it could work, but if you look at the two cables at Samsung / Specifications (or also at Digitec), then only the 5m cable says that it is compatible with the desired QN95A.... Anyone have any idea if the 15m cable will work?

Hello, does anyone know where this TV is made? So "made in ...." Thanks :)

Hi, what will be the best wall mount for the QE55QN95A. In Samsung says that is Slim wall mount WMN-A50EB/XC is the only compatible but when i see installation instructions the back of this tv is missing slots for that type of mount (only Vesa available) thanks in advance