Here's the guide that got me started on Stable Diffusion:
https://www.youtube.com/watch?v=DHaL56P6f5M "Stable diffusion tutorial. ULTIMATE guide" from Sebastian Kamph (because that link didn't give a preview, just search for that on youtube to be sure you get a safe link).
The first 30 seconds of the video sounds like one of those weird text to speech readers, but then the guy comes in and goes step by step talking through installing and using the tool. You've got to install things like git and python and he goes through all of that also in detailed steps. Honestly it was one of the best "how to install python" guides also... ;)
Reddit's down now, but there were some great guides there on using prompts and using tools that customize models, train the tools, and more.
As long as it used the PF2E rules and not PF1E or D&D or none of the above, then I'm for it.
But it's not using the rules of the actual tRPG, then I'd give it a pass. But that's just me. I'm not really into video games. But I am when they have the right angle to them.
Also - I'd need to be able to mod it to a Skyrim / Sims 4 level of modding. Even if I could only do that in an offline mode - that'd be what I'd need to maintain interest.