Here's a sampling of just the performance-related improvements in the patch:
The update weighs in at a hefty 15 GB on consoles, according to Witcher community manager Marcin Momot, and between 6-15 GB on PC, depending on platform.
The developer promises hundreds of improvements - more than 300 are listed in the patch notes - in version 1.10. The notes for the patch are so extensive that it's 13-pages long in PDF form and required a five-part changelog on Steam. CD Projekt Red released a new update for The Witcher 3: Wild Hunt today - version 1.10 - giving players a long, long list of tweaks, performance improvements, bug fixes and gameplay changes.