I’ve already purged the cache and tried every remedy I could find online
That is a bit vague, could you describe more exact what you have done.
And can you provide details about amount of RAM, VRAM and free space left on your Mac (what Mac?).
Are you using internal or external disks?
And can you provide the exact version of Bridge (Bridge / about Bridge)
Did it work before and is this behavior came out of the blue?