UngeheuerLich
Legend
I do use 1 week long rests which helps with number of encounters. But level 20 characters have a ton of spell slots. It is very easy to make a level 20 pc with AC in the 30s even before epic boons, while monster to hit caps out around +19. I don't mind pcs min maxing for AC but I think a tarrasque should still have a chance to hit them.![]()
You need AC 39 to be unhittable except dor a critical hit against attack bonus +19...
But as you state: you use exceptional stats for PCs. You should modify your monsters accordingly. Or actually you needn't. Your characters are epic and a single tarrasque is just a speed bump. They fight the tarrasque's masters.