I am having the same problem, latest version (and possibly the few before this in v 9.x) is sluggish to the point of being unusable . I'm on v9.1.0.338 now. Win 10 latest, 32 GB RAM, 9900K and 1080 Ti, so my computer should handle Bridge well. Everything else, Photoshop and Lightroom for instance, working well. Bridge becomes un-responsive, down to a halt, when interacting with any view. Switching images, going full screen, changing folders, it all ends up taking minutes. My file sizes are in the 20 to 30 MB range, some CR2, some ARW and some TIFF, from a 5D MK II and a RX 100VA. If I simply click once on a thumbnail, I might get a preview top right but no metadata, and the Bridge window keeps flashing "Not Responding" for minutes before anything happens. I have tried resetting Bridge, played with all settings, disabling Bitdefender. The thing is, eventually it seems to catch up, this is not regular.
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