It doesn't matter what the monitor says. The video transmission from drone to controller is only capable of 1080p 60 fps, it is impossible to get any more than this. You can't magically get 4k video output when the input is only 1080p. It will be upscaled somewhere, but it doesn't matter where, it might technically be 4k on the monitor but for all intents in purposes the resolution is still 1080p. The only way to get the 4k video is to record it on the drone since the drone never transmits higher than 1080p 60 fps.
Also you don't seem to understand how slow motion works, if you just display 100 fps on a screen it will not be slow motion, it needs to be slowed down and displayed at a lower framerate for it to be slow motion. Gamers using 240 Hz monitors with 240 fps are not playing in slow motion they are playing with lower latency, that is totally different. The video transmission, even if it handled 100 fps, displays it in real time, so there is no slow motion effect and no benefit to doing it. Your eyes can't make a slow motion effect on their own so your eyes can't slow down a real time video feed.
Why do you want 4k output on a large monitor anyway? It won't make the flying experience any better than using 1080p on a monitor. It won't make the recorded videos or pictures any better either. So what's the point of wanting 4k on the monitor? Chances are it would actually reduce the maximum range of the drone due to it needing to send more data.
There is so much incorrect on this thread that some basic understanding would solve. The video the controller receives is at most 1080p 60 fps, so you don't need 4k high frame rate adapters or anything like that. You can not display slow motion in real time, that is physically impossible.
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