I'm trying a variety of things to see if I can train a model for this problem. I haven't had any luck yet, but I've noticed that the training seems to freeze right at the end of the epoch.
It will sit doing this for longer than it took to get to this point:
This has happened with a few different attempts I've tried (setting the last layer trainable, setting the last 5 layers trainable, etc). I can already tell that this model isn't working, but once I do find a model that works, I'll need to be able to finish training. Any tips?