If you mainly do work tasks it is perfectly ok. My main monitor is a 4k 60Hz, the second is a 2k 144hz. Both runs very fluid with almost no hiccups. My few colleagues adopted the same layout and are happy with it.
It is not ok for gaming though, especially FPS or other games with fast changing scenes.

I did watch it twice already. The third rewatch is nearing, now that you make think about it.