The default path to store temporary files from PowerPoint conversion is:
Is there a way to change this path (entire or part would be useful) ?
Finally I have solved the problem just keeping the directory where it is, but creating a link to another device that I am actually using to store this data.
I have followed this tutorial to create to create this link. This task is not trivial and easy when it does changes on C:\ProgramData directory. But it worked like a charm.
A second step to make a healthy environment was to setup a auto-cleaning task. I did it using this tutorial: