Xbox Series X 4K 120FPS not supported on TV, but TV supports 4K 120

To a degree you don't need a tv that supports HDMI 2.1 to play supported games 120 FPS.

I bought a 4k/HDR LG tv about three years ago and it's HMDI 2.0 but it doesn't support 120FPS at 4k but if I went into the settings of my Xbox Series S and X and changed the resolution from 4k to 1080p I can then set FPS to 120 as my consoles tell me I can play 120 FPS games at 1080p.

HDMI 2.0 only supports 1440p60 or 1080p120.
If you want a higher resolution with 120fps, you'll need a HDMI 2.1 cable.

Your Series S also supports 4k with up to 120fps, just like the Series X.

You can find more info here Set up 4K gaming at 120 Hz on Xbox Series X | Xbox Support when you expand the "Enable 120 Hz without 4K" Tab.

hi i would like to have 120 fps on my tv with my serie x , i take yu a screenshot of settings tv, i dont understand why in settings xbox they dont proposed 120 fps at 4k but i can play 120 fps at 1080p ?

You won't get 120 fps on that TV, as it's only a 60hz display, 60hz = 60 fps at most

To get up to 120 fps at 4K, you need a TV that supports 120hz and has HDMI 2.1 ports and again your TV only has HDMI 2.0 ports, but most games on the Series X are locked to 60 fps at 4K,

Something like the LG CX is the best TV to get at the moment, and that's a TV that can go 4K at 120hz,

A 60hz display = up to a maximum of 60 fps

A 120hz display = up to a maximum of 120 fps.

I had the same issue using a Denon hdmi 2.1 AVR. I solved it using VRR with 120hz, but I have a hdmi 2.1 tv and a Series X, not One X. I guess you are stuck with 4k without vrr or full hd 120 and vrr. Another solution is to connect the Xbox directly to the tv and use arc/earc for audio, but One X does not support 4k 120hz, so you are stuck with full hd 120 if you use vrr.

I am yet to see a tv that will do 1440 other than a monitor, tv's tend to land 1080p to 4k and the series s wont push all games at 120fps at 1440, if you have 10k to spend you can get a very descent 4k tv and the series x and have plenty of change too.