How does physical resistance work?

Grim Dawn Classes, Skills and Builds
1

What does it resist?
And does it have an 80% cap like other resistances?
Thanks.

2

It reduces all physical damage, cap is prolly the same but I’m not sure you’ll get close enough…

3

It resists Physical Damage and Internal Trauma Damage, and is capped at 80%. It is not reduced in higher difficulties.

4

Is physical resistance any good against getting one-shotted if you don’t want to stack DA (provided the damage is physical)?