I am saying it is better to use 1440p with uncapped frames, along with showing 4k.
I would say not even the 1080FE is truly designed in terms of HW spec/technology implemented as a single card solution for 4k when playing games with enthusiast settings - all of those games they benchmarked show sub-optimal fps at 4k (let alone what a frame analysis would show)
Sure you can make it work, but you really need to see a broad range of resolutions and ideally 1440p.
I assume they used 4k to overcome forced VSYNC?
Although I thought that was now resolved.
Cheers
Well 4k is still valid, its always good to see what happens when different parts of the cards are pushed, yeah theoretically we can figure things out but still, there will be some variance that just can't be noticed when ya do the math by hand. Over all, its best to look at as much data as possible then figure out what is best on a per user basis.