Crimson Desert crashes on launch with OptiScaler no matter which proxy/load method I use

[khkhk6562-png]

Since there has been an active increase in new issues without any basic info to help troubleshooting, we're releasing this Issue Report Template that should help troubleshoot without our magic 8 ball. Going forward, issues that do not follow the Template will be ignored.

Game name and version:

Crimson Desert (steam)

Mods and mod versions used

OptiScaler 0.9.0
OptiScaler 0.9.1
OptiScaler 0.9.4

GPU

rtx 3060 ti

OS

win11

Used automated or manual install?

Tried both

Also please mention in description which upscaler inputs are used (which upscaler you selected in game settings).

Did you check the Wiki and Compatibility List?

• Yes

Please describe the issue and steps to reproduce it

I'm having a weird issue with Crimson Desert where I just cannot get OptiScaler to work at all.

The game launches normally without OptiScaler, but as soon as OptiScaler is loaded, the game crashes on startup with 0xc0000005.

I've tried pretty much everything I could think of:

OptiScaler 0.9.0
OptiScaler 0.9.1
OptiScaler 0.9.4
dxgi.dll
d3d12.dll
version.dll
winmm.dll
OptiScaler.asi through an ASI loader
clean game install / file verification
default OptiScaler.ini
forcing different Dx12Upscaler values instead of auto
no RTSS / MSI Afterburner / ReShade / Discord overlay / NVIDIA overlay running

It still crashes no matter what I do.

Current setup:

Crimson Desert Steam version
CrimsonDesert.exe version: 1.0.0.2330
Windows 11 build 26200
NVIDIA GPU
OptiScaler 0.9.4

With 0.9.4, both dxgi.dll and version.dll crash at the exact same OptiScaler offset:

Exception code: 0xc0000005
Faulting offset: 0x000000000003e87a

0.9.1 also crashes at the same internal offset regardless of whether I use DXGI, D3D12 or ASI:

0x000000000003cf8a

I also captured a crash dump.

At the crash point in 0.9.4, the faulting instruction appears to be:

mov rax, qword ptr [rax + rcx*8]

with:

RAX = 0
RCX = 0x11

so it ends up trying to read address 0x88.

The instruction immediately before that is:

mov rax, gs:[0x58]

and the TLS pointer appears to be null on the crashing thread.

So at this point it doesn't look like a particular proxy DLL name is the problem, since changing the loading method just leads back to the same crash inside OptiScaler.

I can attach the .dmp file and logs if needed.

Has anyone seen this on the current Crimson Desert build, or is there anything else I can try? I'm basically out of ideas at this point.

OptiScaler.log

[TheRazerMD]

Haven't received any reports about CD crashing, much less across multiple versions. Are you using any other mods or customisation apps that might be injecting into all processes (ala Windhawk, MacType) ? The Opti log has 0 info, seems to crash on init.
Also any special reason you have fsr31 selected as the upscaler in the config? Would recommend reverting to a clean config file.

If still crashing, then send all the logs and dmp files.

[khkhk6562-png]

I checked running processes, services and installed applications for Windhawk, MacType, ExplorerPatcher, Special K, Overwolf, Nahimic, Sonic Studio, A-Volute, SS2/SS3, etc. None of them are installed or running.

The fsr31 setting was only something I tried while troubleshooting after the crashes had already started. The same crash also happens with a completely clean/default config, so I'll reproduce it again with a fresh config and attach the new log and dump.

CrimsonDesert.exe.27864.dmp

OptiScaler.log

[cdozdil]

Could u check this build of OptiScaler

OptiScaler_20260813_224551.zip

[khkhk6562-png]

CrimsonDesert.exe.1984.dmp

OptiScaler.log

Still crashes with the test build as well.
I used a fresh/default config.
Attached the new log and dump from that run.

[khkhk6562-png]

I just tested OptiScaler 0.9.4 with Black Myth: Wukong as well, and surprisingly it crashes at the exact same OptiScaler offset as Crimson Desert.

Crimson Desert: dxgi.dll 0.9.4 / c0000005 / +0x3e87a

Black Myth: Wukong: dxgi.dll 0.9.4 / c0000005 / +0x3e87a

So this doesn't seem to be specific to Crimson Desert anymore. Both games crash inside OptiScaler at the exact same offset on my system.

[H3llWine]

Are you using ASI mods? I removed them and my game launched with Optiscaler.