Render crash if I had OCIO Aces in my system environment variables

At work I am trying to test old blend scenes (done using the default filmic color space) switching to OCIO color space.
Work machines had OCIO Aces in system environment variables -because is used on other several apps-.
But Blender keep crashing when render that blend files done with original texture color space.

Every image texture needs to be set to the OCIO correct color space to avoid crashes ?

Any workaround to render OCIO without crashes ?
The library of assets is huge and convert one by one will take very long time.

Any help is welcome. Thanks in advance