BAng ! Lots of good ideas hidden in this park ! Looks really good man ! I love that 90 degree double set with curved ledge both sides of it (at 5th pic). Gonna use that idea in future
Yeah seems like you faced that same freezing problem with Backlot ? I found out that it's not freezing when you have any of meters (terrain or Props) full...or i mean that it has never freezed after filled another one. I'm not 100% sure but i recommend to fill props meter when working in Backlot.

Nice park dude ! I will do test run later today after i got pictures for CAP-double-release for tonight =)