Here is the repo,you can also download this extension using the Automatic1111 Extensions tab (remember to git pull).

The best news is there is a CPU Only setting for people who don't have enough VRAM to run Dreambooth on their GPU. It runs slow (like run this overnight), but for people who don't want to rent a GPU or who are tired of GoogleColab being finicky, we now have options.

There are a lot of knobs you can play with to get the training just right. Awesome people like u/Nitrosocke have posted guides on how to get good results Nitro's guide. There is also this great blog post by Suraj Patil giving great pointers on how to get optimal hyperparameters like learning rate and number training steps.