If set to 1 or greater and set in the corresponding setting in the current Mutable state, Mutable can reuse instance UTextures (only uncompressed and not streaming, so set the options in the state) and their resources between updates when they are modified. If geometry or state is changed they cannot be reused.
Usage
mutable.EnableReuseInstanceTextures [value]
Set via the console (~) or in DefaultEngine.ini / DefaultGame.ini.
