I've created about 10 new ones this year with minimal problems. One of em is stuck at like 87% memory and if I try to place anything or switch to night view it crashes to the Playstation dashboard.
Of all the parks I've been sent this year I've seen that same issue on around 5% off them. We're not really sure what causes it, likely an update did something i would guess. No new props this year yet though and now green windows can't be aligned next to each other is pretty disappointing.