Today's update should make the game much more enjoyable to play! I've introduced performance improvements when:

• drawing roads,

• removing roads,

• upgrading roads,

• rotating one-way roads,

• making changes to intersections,

• saving the game.

Additionally, I fixed the non-working 'entering a blocked intersection' sign at intersections with priority signs.

Let me know in the discussions or by writing a review how you're enjoying building your cities now!