http://wccftech.com/new-witcher-3-ps4-pro-patch-fix/

CD Projekt Red has confirmed that a new The Witcher 3 PS4 Pro patch is on its way to fix crashing issues that players have been reporting following patch 1.50.

The Witcher 3 recently received its long-awaited PS4 Pro update through patch 1.50, but for some, the excitement was short-lived as the patch caused the game to crash on Sony’s enhanced PS4 console. At first, a message from developer CD Projekt Red suggested that the issue wouldn’t be resolved, but as it turns out: this was simply a miscommunication on the developer’s part.