I think it’s unfair to complain about its performance

I disagree. If your software runs like a damn snail on inexpensive current-gen hardware, then it’s not worth using.

The most annoying part of that is the shitty render. I actually have an account on one of those AI image generating sites, and I enjoy using it. If you’re not satisfied with the image, just roll a few more times, maybe tweak the prompt or the starter image, and try again. You can get some very cool-looking renders if you give a damn. Case in point: