Version OCBP and OCBPC - FPS fixes and MCM menu settings (updated)

Fixed FPS dependent physics in OCBP FO4 - eliminates chest sagging at low FPS and provides consistent physics at any frame rate.

Original address:

Prefix:

Mod Configuration Menu（MCM）：

OCBP for Fallout 4 2.2.5：

OCBPC for Fallout 4 0.3：

Updated on January 8, 2026:

Version 0.4

Added new features to MCM

Updated on December 7th:

Version 0.3.1

The armor bug should be fixed

Updated on July 16th:

Version 0.3

Add MCM menu

First of all, this is the first fix I (original author Worthless99, the same below) have done, so please understand, thank you! This fix took a few minutes to test, but should work fine

What this MOD fixes:

This is a technical fix for OCBP and OCBPC FO4 that addresses FPS-dependent physics behavior.

Problems solved:

✅ Eliminate "sagging breasts" effect when FPS drops below 60

✅ Stop uncontrolled bouncing after game stuttering/lag spikes

✅ Provides consistent physics behavior from 30-240+ FPS

✅ Eliminate jittery/unstable physics during framerate fluctuations

Technical details:

Initial OpenCBP physics calculations are tied to frame rate, resulting in different behavior at different FPS. This fix changes the physics time step calculation to simulate consistent 60 FPS physics regardless of the actual frame rate.

mistake:

~~- Thigh idle or low fps movement, not sure why. More testing is needed. ~~Fixed in new version (maybe)

Version 0.2

• Possible stuttering/lag when actors enter ocbp physical range - Needs community feedback (to prevent stuttering leave physical distance in ini config as default)

Install:

• Download and unzip
• Copy cbp.dll to Data\F4SE\Plugins\
• Other files (if included) are optional
• Overwrite existing files
• No configuration changes required

Version 0.2 New settings (automatically added to ocbp.ini):

physic_distance_enable=7500.0 # Physics starts working

distance physic_distance_disable=8500.0 # Physics stops working

Distance max_active_actors=10 # Maximum NPC with active physics

compatibility:

• Drop-in replacement for existing OpenCBP installations
• Works with all existing .ini configurations
• Compatible with high FPS physics fix (set FixOCBPSpeed=false)
• Works with pre-NG versions of Fallout 4

Acknowledgments:

OCBP FO4 based on takosako

Original CBP by polygonhell

source code