Physx Performance Improvement Guide (NVIDIA)

PhysX for Mirrors Edge on RTX 50 series is now done with custom driver support due to a previous phasing out of 32 Bit CUDA. FIx is likely not needed for these cards as it is done at a driver level, However I have not tested this due to being on an RTX 30 series card as of Feb 26 https://www.nvidia.com/en-gb/geforce/news/battlefield-6-winter-offensive-geforce-game-ready-driver/

Unfortantely Mirrors Edge ships with outdated PhysX binaries which can cause issues due to the game defaulting to using these.

Ensure sure you have downloaded the latest Nvidia drivers from.
http://www.nvidia.com/Download/index.aspx?lang=en-us
Or from GeForce Experience/Nvidia App

Once installed locate your Mirror's Edge install directory.

For example "C:\Program Files (x86)\Steam\steamapps\common\mirrors edge\" if on Steam.
Once located open the folder called Binaries and delete the following files/folders.

• PhysxLocal folder/directory
  
• PhysXCore.dll
  
• PhysXDevice.dll

Once you've done that launch the game and run through a PhysX intensive area to confirm it's working, if it isn't see the resources section for a link to PCGamingwikis Mirrors Edge article.

(Video Credit to Justin Alex https://www.youtube.com/channel/UCZyp8Ei8jmDcFd0rKQrt0NQ )

PC Gamingwiki Article
https://www.pcgamingwiki.com/wiki/Mirror%27s_Edge
Provides details on other improvements such as resolution fixes and other alternate PhysX fixes. as well as a more detailed explanation as to why PhysX peforms poorly.

Major credit to Justin Alex for his well written guide which helped me with updating this guide.

Crossman for his alternate fix (Untested)

Digital Foundry
https://www.youtube.com/@DigitalFoundry