have option to turn shadows off completely because low detail shadows are awful!
You can disable shadows, just not from the in-game options. In the ..\Documents\Larian Studios\Divinity Original Sin\ folder, you can edit the graphicSettings.lsx file in Wordpad, or other text editor, search for the term ShadowsEnabled (as below) and change the one to a zero.
<node id="ConfigEntry">
<attribute id="MapKey" value="ShadowsEnabled" type="22" />
<attribute id="Type" value="0" type="5" />
<attribute id="Value" value="
1" type="4" />
</node>
