On PC, the update is about 11 GB in size and in addition to the above improvements, the general performance and camera movements should also have been improved. There is also now support for DLSS and audio from the DualSense controller is supported.
On the game’s website, the complete list
In Deathloop, players arrive at a lawless island called Blackreef. They are caught in a kind of loop where the day repeats itself, unless one kills the eight targets in the correct order in one day. The goal is to find the targets, keep the order and thereby break the loop. Deathloop is available for PlayStation 5 and PC.