High-Quality Weapons and Armor

This rule basically says that a "+1 devastating" sword works like a +1 striking sword, except it isn't magical.

Magic items and runes still exist in the campaign, it's just that most weapons with bonuses to attack and damage are high-quality rather than outright magical.

High-quality weapons and armor gives the same bonuses and costs the same, but doesn't penetrate magic resistance, and since there are no potency rune, there cannot be any property runes. If you etch a potency rune to any non-magical weapon the weapon becomes magical as usual.

See: https://2e.aonprd.com/Rules.aspx?ID=1368 (no changes from the rule as written)