It seems that only a limited number of images may be downloaded for a particular search term, typically around 500-800 images based on anecdotal evidence.
After this it seems that Google/Bing search simply reaches the end of the allowable scrolling range. Since the selenium functionality of the scraper simply mimics a human using Chrome to conduct an image search manually, I don't believe a workaround is possible, other than possibly searching for slightly different search terms, and then removing duplicates in post-processing.
It seems that only a limited number of images may be downloaded for a particular search term, typically around 500-800 images based on anecdotal evidence.
After this it seems that Google/Bing search simply reaches the end of the allowable scrolling range. Since the selenium functionality of the scraper simply mimics a human using Chrome to conduct an image search manually, I don't believe a workaround is possible, other than possibly searching for slightly different search terms, and then removing duplicates in post-processing.