I can't tell the difference in 4k and 1080 on my 50inch. I guess it's a blessing since I don't have to worry about these things. I just wish 1080 raytracing was an option on these games rather than sacrificing framerate, 30fps is actually unplayable to me.
I can tell the difference between 1080p and higher resolutions even on a 13 inch laptop screen, but I'd still much rather see games going for enhanced graphical effects and framerates at a 1080p resolution than see either graphics or framerates decreased to get more resolution.
Sacrificing even below the bare minimum required 60fps for enhanced resolutions reminds me of companies marketing how many megapixels their garbage cameras have because consumers equate more megapixels = better camera.