My gaming laptop is 1080p, my tv is 4K, but I only game on PSVR2 nowadays, so 2K resolution.
On my laptop I can spot the pixels.
On tv I don't really see much benefit from 4K over 1080p or rather 1440p and native 4K look identical.
In VR it feels more like 720p resolution at most, 640p more effectively due to the 110 degree fov.