Round Pools Crashing Game!

After placing 1 small round pool piece, game gets stuck on loading when trying to save! I had to close my game twice with task manager after placing a round pool piece, so save before you try and place any!! I lost 2 hours of landscaping (didn't realize I went so long without saving) but the pool piece crashed my game. :(

Also after placing 1 small round pool piece, I could not place any other pool pieces (round & regular). Unsure what I can do?? Please update this!!