Launch options:

```text
PROTON_FORCE_LARGE_ADDRESS_AWARE=1 PROTON_USE_D9VK=1 RADV_TEX_ANISO=16 %command%
```

The game tries to use a launcher. Bypass it because it doesn't work. Change the line in this xml file: `~/.local/share/Steam/steamapps/common/Dragon Age Ultimate Edition/data/DAOriginsLauncher.xml`

From

```xml
<xmlbutton name="play" action="condition" value="FirstRunCheck">
```

To

```xml
<xmlbutton name="play" action="execute" file="${BINARIES_DIR}\DAOrigins.exe" autoquit="true">
```

[Source](https://www.protondb.com/app/47810)