Before we begin, I should point out that if you don't have 12-20 GB of free disk space and at least 8 GB of RAM, I'm sorry, but this project is simply not for you; it just won't run. But thank you very much for your interest and comment!
If you are ready to continue with the painful and confusing installation process, the first step is to install Stability Matrix. Here is a YouTube video, but you can find any other video.
Glad you managed to get it running! Regarding speed, you can reduce the resolution to 768 and the number of steps to 16. My settings are 832x1024 and 20 steps for large images and 768 and 14 steps for small ones.
Also, on a desktop computer (12GB VRAM) I use Forge, and on a laptop (8GB) I use Comfy. In my case, Forge slows down a bit when saving on a laptop, but when I switch to Comfy, the generation process speeds up by 5-10%.
