Image/File folder path

I’m trying to improve some sync issues. My app in on onedrive and the app has to have access to around 1,000 60kb images. The excel spreadsheets (data) is in the same folder as all of the images because I’m using the default rule where images are in the same folder as data. My question is if I try to move all the images out of the folder with the data, could that speed up sync issues? Also, I’ve done a test and have not been successful in changing the image/file folder path in the column definition of my image column. Is there a specific syntax to the image/file folder path?