I use bridge to rename and metadata tag large volumes of video files. Our vidoegraphers shoot at multiple locations in a city, and for some projects multiple cities within a state. For smaller projects I don't really notice, but since I updated to Bridge 2019 (currently running version 10.0.0.124) the program seems to be taking longer to generate thumbnails/previews, and whenever I rename the files or update metadata reprocesses the thumbnails/previews. Prior to the 2019 update I did not notice it doing this.
Further, sometimes it will hang up while processing and the files won't update and become un-updatable until I purge the cache completely for the folder.
I ran the numbers yesterday, and for one of the larger multi-city shoots it looks like I can currently spend nearly 90-120 minutes just waiting for Bridge to process thumbnails/previews. And i do in fact need the still image thumbnails for quick reference while tagging, so turning down the maximum file size for rendering is not an option.