I use a Dell P2715Q with a GeForce GTX 1050 Ti and an HDMI cable and it's at 60Hz. Works fine in Linux and looks great. And this is some pretty old hardware. I believe I had to do something on the monitor to make 60Hz work, but I can't remember for sure.
I have one of these at home and U2718q at work. At work, I use the Macbook USB-C multiport adapter (new one - you have to double check if you have an old one) and at home I got a uni USB-C-> HDMI 2.0 adapter ($18 on amazon)
Both systems work good. Both monitors also worked with mini displayport on my 2015 Macbook at 60hz, which was kind of embarrassing when going to the newer macbook, because it was expensive for the apple adapter and I had to look around before I tried the uni adapter.
