Question about LG 27uk850-W

Yes. It has an absolutely top picture, is extremely sharp with a very pleasant picture at the same time. I use it alongside my professional 31" monitor (which has real 4K and hardware calibration at a completely different price). The picture quality is practically identical and you can forget about the colour deviations.
It's excellent for gaming (I do that sometimes too...) because it's equipped with Freesync and also has a decent response time.

Yes, I use the monitor as a content creator and for gaming!