Game freezes randomly then unfreezes

What could be causing this? On large detailed parks it’s worse. For a few minutes or more I can’t do anything, even exit the park. My only choice is to wait until it gets unstuck or use task manager and force quit the game. The game does hog a lot of memory. Sometimes the memory usage is at 85% or more.
 
You sure it's not auto-saving?

My game will do the same whenever it auto-saves, and on a large park that can take a couple minutes, you really can't do much of anything while it does, and even after the save is finished the fps stays at 0 to 1 for 15 seconds or so before it rebounds. I did tweak the settings so that it wasn't auto-saving every few minutes like before which helped.

Next time it does this look at top right corner next to the little gear symbol, it will likely say 'saving'...
 
Top Bottom