here's my experience with this.
I have two monitors hooked to my computer
one pc monitor asus hd 1080
the other is a 43 inch 4k tv
playing videos and such on the tv monitor is just fine and the reason i have it
can't say anything about gaming as i don't really game.
as for pc work, i will say word, surfing etc on the tv monitor is, well sub par, i've tried but nothing gets the text and such clear, on the actual monitor its nice and clear and crisp.
i hope this helps some.