These weekends I expected myself to get some rest, actually.
In the end, however, I ended up spending most of the Sunday just experimenting, testing, and came out with a new set of settings.
With these new settings I managed to lower the amount of failed arts by... maybe 80%? - While also avoiding style-breaking tags. For example, Koyanskaya was extremely problematic.
At the same time, it also improved prompt understanding. Some concepts are still problematic to pull off (sometimes weirdly so), but what I could do before now is much easier to do.