I’ve made some tweaks to the Immergleich rules.
Evening out the speed of combat
Despite considerable design efforts on my part , melee with comparably-strong opponents tends to take longer as PCs go up in level. High-end single monsters, in particular, take time to grind down. That’s tedious.
Complication — my previous previous changes have left high-end monsters are already very vulnerable to big-hit special attacks (e.g. the Thief’s backstab ability, or the Magic Missile spell). So I can’t just further reduce their hp. I could reign those attacks in a bit, or I could increase PC damage more subtly. I have done the latter: