The TCL Roku 6 and seven sequence each show a 4k 120hz image. BUT this is the necessary half that can disappoint you. You NEED a 2.1 hdmi enter in your tvs board inorder to get a 4k 120hz show from an exterior gadget, ie your xbox.
I am sorry to tell you however the TCl roku Tvs will not work with a sport console or streaming gadget at 4k 120hz as a result of they do not have 2.1 connections.
Only a suggestion, i’ve a U8G hisense that works nice with my sequence X at 4k 120hz and is pretty cheaper than the identify model fashions.