Effect of size?

[weaw]

Some Achievement moves:

Total Equipment Weight: 61.0.
191 STR, 144 STA, 65 Size: 34% Encumbrance.
191 STR, 144 STA, 75 Size: 30% E.
181 STR, 144 STA, 75 Size: 30% E.
181 STR, 134 STA, 75 Size: 30% E.

Total Equipment Weight: 60.2.
214 STR, 135 STA, 114 Size: 19% E.
214 STR, 135 STA, 104 Size: 21% E.
214 STR, 125 STA, 104 Size: 22% E.

Some conclusions:

-- Stamina affects Encumbrance;
-- The higher the relative change of Size , the better effect.

Assumption:

-- It's almost obvious: The higher the Total Equipment Weight, the smaller effect.