What is this Companion carry more perk? I don't see it.

Ok the easy way to increase companion carryweight

Transfer lightweight junk/ food to them

Drop weapons armor heavy items on ground,



Order them to take that item on the ground and inspect corpses

Repeat as desired. Piper at one point had over 1600 pounds of inventory on her,

Cait is usefull for this, but steal powerarmors fusion core via pick pocketing then have her hop into the freshly abandoned armor