IV Released FusionFix

[Cordohen]

8 minutes ago, Ogden said:

I just launched my game, first launch I got a Rockstar Social club error saying my game had crashed. Then I hit retry and my game booted up as normal, I have seen this behavior after an initial RSC update in the past, if that is the same thing that happened to you give it another try with DXVK.

I did multiple retries, but the game just crashes without even sending any error message.

 

I found a thread in the NVIDIA forums mentioning this issue :

https://www.nvidia.com/en-us/geforce/forums/ game-ready-drivers/13/563193/the-latest-driver-version-57602-causes-crashes-in-/ 

[RecklessGlue540]

1 hour ago, Cordohen said:

Also, I remember that highly reflective/glossy grass during rain weather was being worked on, but I'm not sure if the fix was implemented in FF or not in the end.

It's an issue with the map, there was something in the shaders but it's not the proper way of handling things, so that was reverted.

 

Since it's related to the map models, this should be taken care of in Various Fixes, but sadly that's a lot of work.. so..

 

2 hours ago, Ushan said:

Hello, the new version will have a custom visualSettings.dat, but in the latest dev build published, the values "Lod distances for peds" and "Lod distances for vehicles" are set by default, and they are very small.
I would also like to reduce the values "misc.BloomIntensityClamp.HD" and "misc.BloomIntensityClamp.SD" from 10 to 5. Please change these values in the new FusionFix build.

That kinda deviates from the original vision to be for FusionFix to handle, why not do it for yourself?

[Ogden]

1 hour ago, Cordohen said:

I did multiple retries, but the game just crashes without even sending any error message.

 

I found a thread in the NVIDIA forums mentioning this issue :

https://www.nvidia.com/en-us/geforce/forums/ game-ready-drivers/13/563193/the-latest-driver-version-57602-causes-crashes-in-/ 

That sucks, what GPU do you have? I have a 3070, I have heard the 50 series has been having particularly bad drivers lately. Nvidia is turning into classic AMD with the driver issues, even worse in some ways!

[Cordohen]

4 minutes ago, RecklessGlue540 said:

It's an issue with the map, there was something in the shaders but it's not the proper way of handling things, so that was reverted.

 

Since it's related to the map models, this should be taken care of in Various Fixes, but sadly that's a lot of work.. so..

Got it, good to know.

 

Yeah it's currently one of my main gripes with the game, it looks so odd in some places (and the reflections are kinda broken too, there are weird cuts everywhere).

 

6 minutes ago, Ogden said:

That sucks, what GPU do you have? I have a 3070, I have heard the 50 series has been having particularly bad drivers lately. Nvidia is turning into classic AMD with the driver issues, even worse in some ways!

I have a 5070Ti and yeah, couple last drivers break all kinds of stuff, I dunno wtf they are doing.

 

I just managed to fix the issue using this solution provided in the NVIDIA forum link I shared:

https://github.com/marekzajac97/nvgpucomp32_patch

[NightmanCometh96]

I have to say, the new tone-mapping option compliments RTX HDR quite well. If D11 ever re-ports IV to PC, hopefully it has a native HDR implementation like RDR1 PC (ideally, without needing to use RenoDX to unclamp the highlight brightness).

 

That said, I could have sworn the dev build I downloaded yesterday had the fog options swapped: off turns the fog on and vice-versa. I'll need to double check, though, I only tested it briefly.

 

And yeah, the latest NVIDIA drivers have borked 32-bit DXVK for 50-series owners (IV constantly crashes on my 5090). I tried the nvgpucomp32 workaround, but sadly, the game still refuses to launch unless I remove DXVK. Seems that we'll have to wait for NVIDIA to fix things (the poor quality of their recent drivers doesn't instill me with much confidence. Hopefully it's just a driver issue and not something deeper, like deprecating 32-bit PhysX). In the meantime, I guess it's just another reason to hope R* and D11 don't skip PC if IV is being ported again; the game could do well with native DX12/Vulkan renderers.

Edited May 15 by NightmanCometh96

[Cordohen]

11 minutes ago, NightmanCometh96 said:

I have to say, the new tone-mapping option compliments RTX HDR quite well. If D11 ever re-ports IV to PC, hopefully it has a native HDR implementation like RDR1 PC (ideally, without needing to use RenoDX to unclamp the highlight brightness).

 

That said, I could have sworn the dev build I downloaded yesterday had the fog options swapped: off turns the fog on and vice-versa. I'll need to double check, though, I only tested it briefly.

 

And yeah, the latest NVIDIA drivers have borked 32-bit DXVK for 50-series owners (IV constantly crashes on my 5090). I tried the nvgpucomp32 workaround, but sadly, the game still refuses to launch unless I remove DXVK. Seems that we'll have to wait for NVIDIA to fix things (the poor quality of their recent drivers doesn't instill me with much confidence. Hopefully it's just a driver issue and not something deeper, like deprecating 32-bit PhysX). In the meantime, I guess it's just another reason to hope R* and D11 don't skip PC if IV is being ported again; the game could do well with native DX12/Vulkan renderers.

I had to temporarily remove dinput.dll from the game for it to work.

 

Here's what I did exactly: create .exe.local file and put the nvgpucomp32.dll inside it > remove dinput.dll > launch the game (should work) > exit the game > put dinput.dll back in > remove .exe.local file > relaunch the game (should work now with DXVK).

 

Try with both GTAIV.exe and PlayGTAIV.exe to be sure.

[Bizz913]

Double Eleven and Rockstar Games please give us that GTA IV port like RDR 1 so we can use beyond 4 gigs of ram. I can wait till next year.

[NightmanCometh96]

3 hours ago, Cordohen said:

I had to temporarily remove dinput.dll from the game for it to work.

 

Here's what I did exactly: create .exe.local file and put the nvgpucomp32.dll inside it > remove dinput.dll > launch the game (should work) > exit the game > put dinput.dll back in > remove .exe.local file > relaunch the game (should work now with DXVK).

 

Try with both GTAIV.exe and PlayGTAIV.exe to be sure.

I just tried your steps and it's still crashing, unfortunately.

[Cordohen]

7 minutes ago, NightmanCometh96 said:

I just tried your steps and it's still crashing, unfortunately.

Ah well, bummer. I guess it's not a 100% effective solution. The only other way for now would be to downgrade Nvidia drivers if you really want to use DXVK. Hopefully they will fix it soon.

[Ogden]

10 hours ago, Bizz913 said:

Double Eleven and Rockstar Games please give us that GTA IV port like RDR 1 so we can use beyond 4 gigs of ram. I can wait till next year.

Just imagine being able to have no foliage pop in and Ray traced reflections off of the sh*tty beige Willard

[Bizz913]

7 hours ago, Ogden said:

Just imagine being able to have no foliage pop in and Ray traced reflections off of the sh*tty beige Willard

Also center camera just like any game and ahhh my God, that Red Comet and its sound.

Edited May 16 by Bizz913

[Ushan]

What traffic density do you recommend setting in the settings?

[Fredster_a]

On 5/24/2025 at 3:20 PM, Ushan said:

What traffic density do you recommend setting in the settings?

I would recommend either 33 like on console or 50 if you want higher. Anything above that can lead to gameplay frustration like traversing being tedious & tailing missions breaking or issues when crossing over one of the bridges.

Edited May 25 by Fredster_a

[pathfinder91919]

Amazing mod, fusion fix is the best thing that happened for gta iv for PC. I always wanted water foam to work correctly on pc, and when I saw this in one of the latest fusion fix updates, I was so hyped. Now I downloaded the last version, game looks amazing, but sadly water foam doesnt appear to be working. Whats weird is that if I pause the game I can briefly see the water foam appearing, but only then. In normal gameplay its invisible just like it always was before this fusion fix update. Does anyone know how to fix it?

[Ash_735]

2 minutes ago, pathfinder91919 said:

Amazing mod, fusion fix is the best thing that happened for gta iv for PC. I always wanted water foam to work correctly on pc, and when I saw this in one of the latest fusion fix updates, I was so hyped. Now I downloaded the last version, game looks amazing, but sadly water foam doesnt appear to be working. Whats weird is that if I pause the game I can briefly see the water foam appearing, but only then. In normal gameplay its invisible just like it always was before this fusion fix update. Does anyone know how to fix it?

Do you have ScriptHookDotNet.asi in your root folder? It's most likely an outdated version and is known to cause issues with rain and water.

[pathfinder91919]

1 minute ago, Ash_735 said:

Do you have ScriptHookDotNet.asi in your root folder? It's most likely an outdated version and is known to cause issues with rain and water.

I do, but yes its been a while since I downloaded it. Where should I get the latest version that works properly with fusion fix? Thanks for the quick answer

[pathfinder91919]

13 minutes ago, Ash_735 said:

Do you have ScriptHookDotNet.asi in your root folder? It's most likely an outdated version and is known to cause issues with rain and water.

Nvm, I have found the last version and it fixed the issue! Water foam is now in the menu :D. A profusion of thanks!

[pathfinder91919]

Hey all, I have a silly problem now, after the intro when Roman appears to pick up Niko, the car has no wheels, what could be causing this?

[EiF0hn]

2 hours ago, pathfinder91919 said:

Hey all, I have a silly problem now, after the intro when Roman appears to pick up Niko, the car has no wheels, what could be causing this?

It's an issue with an older version of  Various Fixes iirc

Edited May 27 by EiF0hn

[pathfinder91919]

2 hours ago, EiF0hn said:

It's an issue with an older version of  Various Fixes iirc

Yes it was that, I fixed it. By the way do you know if I can use the console gamma setting from a previous fusion fix release? The latest console gamma is too dark.

[EiF0hn]

11 hours ago, pathfinder91919 said:

Yes it was that, I fixed it. By the way do you know if I can use the console gamma setting from a previous fusion fix release? The latest console gamma is too dark.

Just decrease the contrast slider by one increment, then it'll look like in the older version It was only changed because the X360 version behaves like this 

Edited May 28 by EiF0hn

[pathfinder91919]

Ok I reduced it a bit and its almost like before. I have one last issue (sorry for typing here so much), the problem is that the water flickers, sort of dissappear and comes back, mostly when you move the camera, in the intro when the camera pans above the boat it can be seen clearly. Its not a new issue because I remember happening years ago. Does someone know if this can be fixed?

[AverageOnlinePlayer]

god bless you all, thank you

[AverageOnlinePlayer]

Noob question, would rockstar get pissed off if i have mods like this installed? Am i supposed to log out of the rockstar launcher or something? Last time i played gta4 on pc was before the rockstar launcher was even a thing

 

also the snow easter egg is very rockstar-esq i love that

Edited May 30 by AverageOnlinePlayer

[AverageOnlinePlayer]

delete please sorry for triple post

Edited May 30 by AverageOnlinePlayer

[EiF0hn]

21 hours ago, pathfinder91919 said:

Ok I reduced it a bit and its almost like before. I have one last issue (sorry for typing here so much), the problem is that the water flickers, sort of dissappear and comes back, mostly when you move the camera, in the intro when the camera pans above the boat it can be seen clearly. Its not a new issue because I remember happening years ago. Does someone know if this can be fixed?

There is no fix yet, but the FusionFix team is working on it

[pathfinder91919]

Are there ways to increase vegetation pop in? Grass in some places spawn very close

[lakreev]

I'm on the latest Steam version of GTA IV with Fusion Fix, and I've noticed a weird bug — Niko casts a dynamic shadow under the car, same as nearby NPCs.
Has anyone else run into this? Is there any fix for it?

 

Please note: I'm not looking for the advice about disabling streetlight night shadows — that's not the solution I'm after

[EiF0hn]

16 hours ago, pathfinder91919 said:

Are there ways to increase vegetation pop in? Grass in some places spawn very close

Haha that's yet another issue that they are working on right now

[El Dorado]

2 hours ago, lakreev said:

 

Please note: I'm not looking for the advice about disabling streetlight night shadows — that's not the solution I'm after

 

 

well there's no other solution really, night shadows are a complete mess in this game