same section from the previous photos. flat terrain (mostly... some minor changes in height) and squared up roads. looking into that section some more for additional variables, it looks like I-connectors are related to the issue. the connection is: T > road > i > road ^^^^^problem shows up here I use the iconnector to choose where i want the sidewalk to end, otherwise i wouldnt need it. when i disconnect the i connector, it doesnt show the artifacts. seems related, but i dont know the architecture.