Choppy Physics Fix

How to patch the game's physics framerate.

What this mod does

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.

1. Download the unlocker

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.

2. Extract the patcher

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:

C:\Program Files (x86)\Steam\steamapps\common\bioshock\Builds\Release

3. Run the patcher

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.)

You're done!

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.

[Francisè von Spitroast]

It says completed and has no issues finding the .exe, but it automatically reverts back to 30 afterwards.

[Francisè von Spitroast]

This isn't working for me for some reason.

[John]

thanks
set fps 120
and my screen size (ingame option): 2560 x 1440

by default was already set to: 2560 x 1440
but 30fps not great!

change to now 120fps now

[scotticusthefirst]

@Turtle I'll try it when I get home.

[Turtle]

@scotticusthefirst Sorry, I don't have a Steam Deck to test it myself. It should work if you can run the patcher program, either by adding it as a "non-Steam game" or via Wine. If that isn't possible, then patching Bioshock.exe via a Windows computer then moving the executable over manually will probably work.

[scotticusthefirst]

Does this mod work on steamdeck?

[MugMan]

what if i want infinite fps

[Arockah]

KING S***

[SnazzyNaz]

@Keta This is only intended for the original release. The remaster already includes higher framerate physics.

[[1m4] Keta Klaus im Peterschmaus]

wait.. does this work on both, bioshock and bioshock remake?