[cguZZMan]

Hey everyone.
,
1) Perhaps I'm not understanding how to use the refresh slideshow. From Pictures, I enter OneDrive, select recursive slideshow. Pictures are NOT updated when I add a picture to OneDrive, but will be if I stop and restart the slideshow.

2) Is there a way to autostart this at launch?

Hi there, to use the auto-refreshed slideshow, enter to OneDrive, and once you see the folder which contains your pictures, display the context menu of that folder (right click or key 'c') and you'll see the Auto-Refreshed Slideshow option.
This feature is not recursive, so you may need to put all your desired pictures in the same folder.

To start the slideshow at startup, you need to run the following instruction:
SlideShow(plugin://plugin.onedrive/?action=open_folder&driveid=<REPLACE_FOR_DRIVEID>&item_id=<REPLACE_FOR_ITEMID>&content_type=image&child_count=0)

Just replace the DRIVEID and the ITEMID values with the correspondent values of your folder.
If you don't know them, just go to onedrive.com and navigate to your folder. Once there, the url will have 2 parameters: id and cid. The id is your ITEMID, cid is your DRIVEID.
Let me know if this works for you.