I have catalog with around 700 000 images. FIltering is very slow, is it what is supposed to be? I have my catalog on external SSD (Samsung T7, blackmagic speed test gives around 750 mb/sec read write speed) and all photos on external usb dual disk raid hdd (around 120 mb sec speed).
Switching from folder to folder in Filtered mode takes around 1 to 2 minutes, and you dont see, whats actually going on in background.
Also, it very annoying, when Filter parameter Folder Path fold himself, after I delete some of the filtering images, even If I selected another folder already.
Please, look at the attached video:
http://drops.andreylv.ru/tev9zW