I'm reading a lot of conflicting information about the Pixel Per Unit setting for pixel art games. Many people use 1 px = 1 unit and report no problems. Others use 1 game tile = 1 unit, so something like 16 or 32 pixels per unit. Many others seem to leave it to the default 100 "because that's the way that it was intended." The designer of the modestly-sized Flamberge recommends using 1 px = 1 unit, for example. A Unity poster (I think that it was Melvyn May) at one point said that it should not make any difference, but I cannot find this link. Many others say that Unity physics will break with a small setting like 1 px = 1 unit, or have some kind of "jitter." Still others say that Unity physics will become very taxing on performance because too many calculations will be made due to the processing of so many physics units. Is there any consensus on this? Does anyone from Unity have any input into this? Any experienced developers with any input on this?