How to Configure StrokeStrafe on Character

I noticed there's two types of animations for the underwater swimming, the "StrokeStrafe" (the one from the demo) and the "KickStrafe" the one that gets activated when you Run underwater.

How do i activate StrokeStrafing on my character when not pressing "Shift" to run?
 
I believe i have to reduce the underwater character speed / velocity, where can i do that? i'd like to achieve the same swimming effect as nolan in the demo
 
I noticed that StrokeStrafing only gets activated when you have no iteems in your equipment, in my case i had the "Body" as default, taht's why i had the perrmanent KickStrafe
 
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