Wait for Bug Fixes
If you can't bugs and performance issues, you might want to wait for the developer to roll out a few patches before buying the game.
We'll probably see a pretty steady stream of bugs fixes and performance improvements as the developer fixes some of the game's initial problems at launch.
These patches will help to stabilize the game and make it far more enjoyable on your PlayStation 4.
There will always be issues with a game of this size, but if you wait a few weeks, you'll probably wind up with a more polished version of the game.