Choppy Physics Fix

If you have played Bioshock before, you probably know that the game suffers from having a permanent 30 FPS cap on the physics engine. I made a mod that fixes that.

(Note: You must watch the video in 720p or 1080p 60 FPS to notice any difference.)


This has only been tested with the Steam release of the game, though it should also work with the retail 1.0 and 1.1 releases. I have heard it does not work with the Direct2Drive release of the game, presumably due to some form of DRM.

First, you will need to download the patcher files. Click here to go to the GitHub release page[github.com], just download the latest version.


If you would like, you can also check out the source code[github.com] of the mod.

Once you have the patcher files downloaded, you will want to extract "BioshockPhysicsUnlocker.exe" to your Bioshock directory. The Bioshock directory is typically located at:

After you have placed the BioshockPhysicsUnlocker.exe file inside the Bioshock directory, run it!
The program will automatically begin to patch your Bioshock executable.

You may need to run the unlocker as administrator (Right click -> Run as administrator) if it says it can't find the executable.

Once it has scanned it, you can choose what you want to set your new physics FPS to. For most people, 60 FPS will be sufficient.

(If you have a sick rig you can push it up to whatever you want.)

That's all there is to it. Just downloading, extracting, and running!
The next time you launch Bioshock the physics engine should be smooth as silk.