After having placed 484 tiles with pixel perfect (I would pixel hunt them to place them perfectly square) and having to redo them because of NPC retardation. I learn halfway through the ordeal, that you can snap them into place. The conditions for this are, however, completely retarded. You stand roughly 1 and 1/3rd of a tile away and point to the tile that's one further down. The tile which is directly 1 and 1/3rd away (not the one you are pointing at) from you, will then, suggest, a place to be snapped
. That's nice to know after 3 hours of redoing it today and the eternity it took yesterday.