Question My TV sees only 30Hz from my PC

Mar 11, 2020
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Hello!
I have a Xiaomi Smart TV, 4k 60hz, but for some reason when it is connected to PC it says @30Hz. I made sure everything was right, and it can not be from the TV since I tried it with another TV (Hisense 4k 60hz) and that one saw 30hz too.

I made sure the TV settings were alright, with hdmi 2.0 enhanced box checked, the nvidia setting changed to 60hz, the hdmi cable is 2.0 (cable that I also used to a 60hz monitor and it worked without issues) and the video card has hdmi 2.0b.

What could be the problem? I ran out of stuffs to check.. I have no ideas anymore...