wip Real-Time Body Physics (DirectX 11)

[CPVC]

On 1/4/2026 at 3:25 PM, xxdungeonxx1 said:

Besides the shoulder problems, I noticed that sometimes it doesnt work with womans asses, and it also makes the game crash on loading a new world or traveling. Its great overall, Im looking forward to see it without these minor bugs, Nice work. 

 

23 hours ago, Pantera2 said:

My game won't even launch with the .dll or D3d11.dl  files in the Bin. It launched just fine without them so I don't know what to do here. I'm using RTBP v2.0 2026-01-01 and RTBP GUI Tools 2026-01-01.zip.

 

Let me see your log files if you got them. Also, share any popups or whatever if they appear. Also, updating your graphics drivers can't hurt. It's worked in the past for some people.

[yokozii]

my game is running smooth with RBTP + RESHADE DX11 running on Intel OS! 

 

some tips & things to know as of Jan 2026 update: 

 

• install the mod the exact same way as instructed originally. do not forget to change your graphics rules  fileif you have an intel processor or this will NOT work.
• click the INSTALLATION . HTML for instructions how to install if you forget. it will tell you things for DX9 but most of it is the same
•  
• RTBP will create a new default settings.ini if you delete or want a fresh one with basic settings.
•  
• you do not need to rename the file to reshade.dll it will NOT work. keep it unchanged , the instructions in the zip are for DX9 not DX11. just drag and drop. 
•  
• open the GUI with shortcut F8 or F11 .
• if you have intel the way to open the UI looks the same as reshade and GUI might not open if you keybind anything from reshade to F8 or F11 
• GUI is not something I use because of reshade , I use manual settings
•  
• open the settings.ini in notepad and hit save to adjust RBTP changes and test them real time (manually) in game from CAS .
• switch to another outfit / walkstyle and the changes will show in a few seconds. this is a good time to test reshade + RTBP in CAS
•  
• install RTBP then reshade after. so uninstall or move your reshade folders + presets to a temp folder, run game , run RTBP , close game, install reshade again. 
•  
• letting your game load without playing  for at least 30 minutes + helps minimize distorted graphic bouncing issues. but they occur more if you play with your diagonal & damping settings alot. 
• I haven't tried the commander so I don't know how that will work . 
• reshade loads the same time as the startup logo png , I  set it to false for this reason in settings.ini for less less load time BUT installing it with the logo works for me and the file without logo does not. 
•  

EDIT : GUI in game commander (not the old program) does work with reshade I just rarely use it because the shaders can blur or mess up the UI see here

 

Edited January 8 by yokozii

[shinichi104]

On 12/28/2025 at 5:12 AM, yokozii said:

I'm definitely interested in the blender plugin for my mods ! ;D I'll be on lookout for whenever you release this

same i love your what a peach sliders and i noticed that if a sim wears a shirt that covers their butt that there are no physics there just on the pants.

[LeoTheImmortal]

so this is the only logs i could find for this crash. i realized that the directx 9 version is now considered legacy but its far for more stable the dx11(probably more of an issue with the directx version of the game than your mod) for my heavy modded game. i dont know why this happens but its been happening alot. the mod is functional until this happens, when your mod does produce its own error message it'll allow me to still save and looks functional. i do have other crash logs from the event viewer pointing to d3d9.dll. i played sims years ago when it was far more stable with your mod install. i cant say for certain if other mods are doing it. i do have better exceptions install but i fixed the issues it was complaining about so it stopped alerting me to issues. i can play for several hours some times before this happens sometimes its only less than an hour. i did try to keep any personal info out of the the screenshots

[RealSiViX]

14 hours ago, catk1775 said:

so this is the only logs i could find for this crash. i realized that the directx 9 version is now considered legacy but its far for more stable the dx11(probably more of an issue with the directx version of the game than your mod) for my heavy modded game. i dont know why this happens but its been happening alot. the mod is functional until this happens, when your mod does produce its own error message it'll allow me to still save and looks functional. i do have other crash logs from the event viewer pointing to d3d9.dll. i played sims years ago when it was far more stable with your mod install. i cant say for certain if other mods are doing it. i do have better exceptions install but i fixed the issues it was complaining about so it stopped alerting me to issues. i can play for several hours some times before this happens sometimes its only less than an hour. i did try to keep any personal info out of the the screenshots

 

What version of RTBP are you running...?

 

Also, you can get more in-depth reports if you use Better Exceptions from TwistedMexi - https://www.patreon.com/posts/better-v3-15-130049745

 

It's on Patreon but it's a free download. Really saves me a lot of time and headaches.

 

Also, if you're not already, it could be helpful to use the Sims 4 Mod Manager which has tools to check for duplicate files, files that need updating and a lot more - https://gametimedev.de/S4MM/

[LeoTheImmortal]

7 hours ago, RealSiViX said:

 

What version of RTBP are you running...?

 

Also, you can get more in-depth reports if you use Better Exceptions from TwistedMexi - https://www.patreon.com/posts/better-v3-15-130049745

 

It's on Patreon but it's a free download. Really saves me a lot of time and headaches.

 

Also, if you're not already, it could be helpful to use the Sims 4 Mod Manager which has tools to check for duplicate files, files that need updating and a lot more - https://gametimedev.de/S4MM/

should be this one v0.4-p8 2024-04-12 should be latest? i'm not certain to be honest the files arent stamped with the file version in properties, could be the p9-e3 file
better exceptions has already been install before this issue
installing S4MM now.
switch out rtbp yesterday for the tonic's bouncing mod i didn't experience any crashes, but going to do more testing cause i know it has very weird crash intervals 

 

[CPVC]

On 1/6/2026 at 12:00 PM, catk1775 said:

so this is the only logs i could find for this crash. i realized that the directx 9 version is now considered legacy but its far for more stable the dx11(probably more of an issue with the directx version of the game than your mod) for my heavy modded game. i dont know why this happens but its been happening alot. the mod is functional until this happens, when your mod does produce its own error message it'll allow me to still save and looks functional. i do have other crash logs from the event viewer pointing to d3d9.dll. i played sims years ago when it was far more stable with your mod install. i cant say for certain if other mods are doing it. i do have better exceptions install but i fixed the issues it was complaining about so it stopped alerting me to issues. i can play for several hours some times before this happens sometimes its only less than an hour. i did try to keep any personal info out of the the screenshots

 

So no RTBP log was generated? That'll be in "...\Documents\Electronic Arts\The Sims 4\RTBP\Log.txt" if it exists. Usually at the end of the log it'll write a stack trace of what went wrong. That's what I'd like to see.

 

RTBP isn't a traditional mod so the game won't report any issues with the mod in-game. Something like Better Exceptions won't help either. The only way for RTBP to report errors is through it's log file.

[LeoTheImmortal]

13 minutes ago, CPVC said:

 

So no RTBP log was generated? That'll be in "...\Documents\Electronic Arts\The Sims 4\RTBP\Log.txt" if it exists. Usually at the end of the log it'll write a stack trace of what went wrong. That's what I'd like to see.

 

RTBP isn't a traditional mod so the game won't report any issues with the mod in-game. Something like Better Exceptions won't help either. The only way for RTBP to report errors is through it's log file.

ohhhhh, this might be a crash log or its a close game log

Log.txt

[Vel707]

For me unless i hit the test either x,y or z nothing happens during normal gameplay, i change the mass and nothing changes. I'm on DX11 and use reshade

 

Log.txt

Edited January 8 by Vel707

[CPVC]

9 hours ago, catk1775 said:

ohhhhh, this might be a crash log or its a close game log

Log.txt 3 MB · 0 downloads

 

What the... An outside source is trying to connect to RTBP like it was a HTTP server:

 

[RTBP.INFO (CommandServer) 50:59.724] New command sent from client #23748: GET / HTTP/1.1

Host: 97.91.70.46:8008

User-Agent: cypex.ai/scanning Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) Chrome/126.0.0.0 Safari/537.36

Accept: */*

Accept-Encoding: gzip

 

Something sending unexpected data to RTBP could cause it to crash. Not sure what that's about. Antivirus? Later in the log it starts sending binary data.

 

50 minutes ago, Vel707 said:

For me unless i hit the test either x,y or z nothing happens during normal gameplay, i change the mass and nothing changes. I'm on DX11

Log.txt 81.71 kB · 1 download

 

Your initial distance limits are set pretty low. Try increasing them. To completely disable distance limiting, press "F11" to open the GUI, click the "Debug Flags" tab on the bottom left, check "disableDistLimits" in the list of debug flags.

[Johnnykill]

I put everything according to the instructions. But nothing is working. Help!!!

[RTBP.DBUG 00:00:24.62 1] D3D11CreateDevice called:
    DriverType: Hardware
    Flags: 0
    FeatureLevels: 9
    SDKVersion: 7
    ppDevice? false
    ppImmediateContext? false
[RTBP.INFO 00:00:24.62 1] No usable custom D3D11 DLL found. Using system DLL

[LeoTheImmortal]

57 minutes ago, CPVC said:

 

What the... An outside source is trying to connect to RTBP like it was a HTTP server:

 

 

[RTBP.INFO (CommandServer) 50:59.724] New command sent from client #23748: GET / HTTP/1.1

Host: 97.91.70.46:8008

User-Agent: cypex.ai/scanning Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) Chrome/126.0.0.0 Safari/537.36

Accept: */*

Accept-Encoding: gzip

 

 

Something sending unexpected data to RTBP could cause it to crash. Not sure what that's about. Antivirus? Later in the log it starts sending binary data.

 

 

Your initial distance limits are set pretty low. Try increasing them. To completely disable distance limiting, press "F11" to open the GUI, click the "Debug Flags" tab on the bottom left, check "disableDistLimits" in the list of debug flags.

i only have windows security install. and if we're talking mozilla firefox i dont have that install

Edited January 8 by catk1775

[RealSiViX]

15 hours ago, catk1775 said:

should be this one v0.4-p8 2024-04-12 should be latest? i'm not certain to be honest the files arent stamped with the file version in properties, could be the p9-e3 file
better exceptions has already been install before this issue
installing S4MM now.
switch out rtbp yesterday for the tonic's bouncing mod i didn't experience any crashes, but going to do more testing cause i know it has very weird crash intervals 

 

Ok, according to your log, you are using v0.4-p8. Try version v0.4-p9-e3 from the bottom of the post for RTBP here on LL

[RealSiViX]

1 hour ago, CPVC said:

 

What the... An outside source is trying to connect to RTBP like it was a HTTP server:

 

 

[RTBP.INFO (CommandServer) 50:59.724] New command sent from client #23748: GET / HTTP/1.1

Host: 97.91.70.46:8008

User-Agent: cypex.ai/scanning Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) Chrome/126.0.0.0 Safari/537.36

Accept: */*

Accept-Encoding: gzip

 

 

Something sending unexpected data to RTBP could cause it to crash. Not sure what that's about. Antivirus? Later in the log it starts sending binary data.

 

 

Your initial distance limits are set pretty low. Try increasing them. To completely disable distance limiting, press "F11" to open the GUI, click the "Debug Flags" tab on the bottom left, check "disableDistLimits" in the list of debug flags.

 

 

That's not antivirus, the user-Agent is listed as "cypex.ai/scanning".

 

It looks like someone is hitting them with a port scanner trying to identify vulnerable ports. It might be a good idea to add a check to ensure all requests are coming from localhost and drop any external requests.

 

On the user end, if you have access to your router/firewall rules, you'll want to set up a rule to drop all requests from the IP "97.91.70.46" as that appears to be the only IP they are scanning from.

[RealSiViX]

3 minutes ago, RealSiViX said:

 

 

That's not antivirus, the user-Agent is listed as "cypex.ai/scanning".

 

It looks like someone is hitting them with a port scanner trying to identify vulnerable ports. It might be a good idea to add a check to ensure all requests are coming from localhost and drop any external requests.

 

On the user end, if you have access to your router/firewall rules, you'll want to set up a rule to drop all requests from the IP "97.91.70.46" as that appears to be the only IP they are scanning from.

 

After a little more research, it appears cypex.ai is an independent cybersecurity research company who claim to specialize in "Predictive Threat Intelligence" through real-time global IP monitoring to "predict threats, identify malicious actors, and provide deep context on IP addresses, helping security teams automate defenses and gain insights beyond traditional tools. It offers predictive intelligence, detects threats hidden by VPNs/proxies, and centralizes data to simplify complex tasks for SOC analysts and CISOs, reducing reliance on fragmented tools"

[LeoTheImmortal]

11 hours ago, RealSiViX said:

 

 

That's not antivirus, the user-Agent is listed as "cypex.ai/scanning".

 

It looks like someone is hitting them with a port scanner trying to identify vulnerable ports. It might be a good idea to add a check to ensure all requests are coming from localhost and drop any external requests.

 

On the user end, if you have access to your router/firewall rules, you'll want to set up a rule to drop all requests from the IP "97.91.70.46" as that appears to be the only IP they are scanning from.

i think i have access to everything, i think its blocked now but uncertain, i'll test it out with the current update for d3x9

[LeoTheImmortal]

1 hour ago, catk1775 said:

i think i have access to everything, i think its blocked now but uncertain, i'll test it out with the current update for d3x9

did both fixes(d3d9.dll and firewall settings). might still be early in testing but seems to be holding, i think something is bugged with the ball physics(no crotch meshes/textures) in this update so i disabled them.

[CPVC]

16 hours ago, RealSiViX said:

 

After a little more research, it appears cypex.ai is an independent cybersecurity research company who claim to specialize in "Predictive Threat Intelligence" through real-time global IP monitoring to "predict threats, identify malicious actors, and provide deep context on IP addresses, helping security teams automate defenses and gain insights beyond traditional tools. It offers predictive intelligence, detects threats hidden by VPNs/proxies, and centralizes data to simplify complex tasks for SOC analysts and CISOs, reducing reliance on fragmented tools"

 

Ah, ok. Well, I fixed this right after I found out that RTBP was listening on all IPs. I don't know why I had it set to do that in the first place. I think this might have been from the early days when I was thinking about possibly developing RTBP on one PC and testing on another. Either that or I just assumed everyone would be behind a router. Anyway, I've fixed it. The next version of RTBP will listen on loopback only.

[LeoTheImmortal]

crash with multiple popups, only crashed after i clicked the yes/okay button but was unplayable with the pop up forcing to go to desktop. this might be why i had the older version on

 

Log.txt

[LeoTheImmortal]

33 minutes ago, CPVC said:

 

Ah, ok. Well, I fixed this right after I found out that RTBP was listening on all IPs. I don't know why I had it set to do that in the first place. I think this might have been from the early days when I was thinking about possibly developing RTBP on one PC and testing on another. Either that or I just assumed everyone would be behind a router. Anyway, I've fixed it. The next version of RTBP will listen on loopback only.

will the update be included with directx 9 version of this tool?

[CPVC]

1 hour ago, catk1775 said:

crash with multiple popups, only crashed after i clicked the yes/okay button but was unplayable with the pop up forcing to go to desktop. this might be why i had the older version on

 

Log.txt 2.58 MB · 0 downloads

 

1 hour ago, catk1775 said:

will the update be included with directx 9 version of this tool?

 

I think I might know what's going on. Here try this one. I did include the server fix here, too. This build of RTBP will only listen on localhost.

RTBP v0.4-p9-e4 2026-01-08.zip

[LeoTheImmortal]

40 minutes ago, CPVC said:

 

 

I think I might know what's going on. Here try this one. I did include the server fix here, too. This build of RTBP will only listen on localhost.

RTBP v0.4-p9-e4 2026-01-08.zip 1.79 MB · 0 downloads

thank you i'll test it out shortly

[LeoTheImmortal]

1 minute ago, catk1775 said:

thank you i'll test it out shortly

the file size went from 41mb to 5.5mb

 

Edited January 9 by catk1775

[LeoTheImmortal]

might be because i tabbed out or something else. popup with crash

Log.txt

[LeoTheImmortal]

4 minutes ago, catk1775 said:

might be because i tabbed out or something else. popup with crash

Log.txt 10.56 kB · 0 downloads

had nothing to do with tabbing out