Sword Coast Drifters
The game uses the Variant: Encumbrance rule (PHB, p176), with the following changes:
STR x 10 = encumbered
STR x 15 = heavily encumbered (max load)
Carrying equipment and items less than 10 times your Strength score imposes no penalty.
If you carry weight in excess o f 10 times your Strength score, you are encumbered, which means your speed drops by 10 feet.
If you carry weight 15 times your Strength score (your maximum carrying capacity), you are heavily encumbered, which means your speed drops by 20 feet and you have disadvantage on ability checks, attack rolls, and saving throws that use Strength, Dexterity, or Constitution.