I have an Dell Inspirion 15 7000 (the one with 4k and the NVidia 1060). I was wondering if it's possible to buy a better graphics card like a 1080 ti and install it? Or is that even worth it. The reason why I want to do it is because I have a low fps when I play bigger games in 4k. I have to change the display to 1080p which I don't like to do to get a smooth 60. Thank you!