I've seen a stack of music blocks, who couldn't all fit on the screen at once when you interacted with the pile... so no, BUT it did lag like hell, having all that information to load. and it was in a house, not on a street, but on the floor all the same
The limit is how many stacks the game can load before it crashes. It doesn't matter if the stacks are spread out or in the same spot. Some people have thousands of stacks in their homes, but not sure if anyone has reached over 10,000 yet...