Yeah it's way harder to do the "big" sets in VR I think.
You have no "upgrades" in VR, you only pick and place the bricks.
It work great for small sets but I think it's a little bit tidious and take a lot of time for big sets.
Also wearing the headset for a long periode of time can be a little bit unconfortable, i like to do small or medium sets so i don't wear the headset for too long