In terms of non-VR stuff (@1440p), mostly Arma 3, GTA5, Witcher 3 and BeamNG. Then some Oculus VR stuff too, such as Elite Dangerous, and The Lab.
TBH, they all run pretty well unless I start to crank up AA, but then you don't really need much AA at 1440p anyway. I guess my 1070 is probably the bottleneck there though.
I look the look of Threadripper, but not the price tag! Think it's a bit beyond my budget, sadly