A:Answer Have look at Rtings. com
https://www.rtings.com/tv/learn/what-is-the-refresh-rate-60hz-vs-120hz
Conclusion "For most people, a TV with a 120hz refresh rate doesn't serve a purpose. There is no difference when compared to a 60Hz model if they are both playing standard content. If you are sensitive to judder or if you like the soap opera effect, then it can be useful.
If you're into PC gaming though, a TV that supports a 1080p @ 120Hz input is very beneficial, since video games can actually be played at that faster refresh rate. A 120Hz monitor or TV displaying 120 fps content will have much smoother and clearer motion."
Content Frame Rate
Netflix 24 fps to 60 fps
Amazon Video 24 fps to 60 fps
Blu-ray Movies 24 fps
Youtube 30 or 60 fps
Cable/Broadcast TV (NTSC) 30 or 60 fps
Cable/Broadcast TV (PAL) 25 or 50 fps
