I, for a majority, play Overwatch and CSGO and other competitive games where the games aren't too heavy but having high FPS is important. On Overwatch, in Ultra settings with some shadows turned down to high, I get about 150-170 FPS on Custom settings and CSGO I get well over 200 FPS on the absolute highest settings.
I also run a very heavily modded Skyrim, and that gets dips from time to time, for the most part I get 60 FPS but when I go into towns it does dip down to 40.
The point is, if you are looking to play Witcher 3 in 4k than there will be Frame loss but if you are just looking to play some games in 1080 to 720, I would highly recommend this.