Rockstar released yesterday a new update for the PC version of L.A. Noire. Be warned that this update might break compatibility with the 60fps workaround, so back up everything before applying this patch. According to the release notes, the new patch comes with improvements to the game’s performance. Therefore, go ahead and download it if you are experiencing performance issues. If, on the other hand, the game runs smoothly to you, there is no reason in updating it. This new update will be auto-downloaded next time you start the Steam client. You can view its changelog bellow.
L.A. Noire – New Update Changelog:
-Fix to prevent mouse cursor from turning on when using -str command line to improve performance
-Render state optimizations to improve performance
-Single-threaded renderer option added to game launcher to improve graphics performance on certain setups