Hi all, is there any way to customize the strength of fine tuning into blender when shift is pressed? Maybe there is some addon?
In 3d view or using UI?
That’s actual the answer 
… when in the viewport even a Shift-–drag might “jump”… but using this in the Item Transfom data then it is “smoother”.
using UI. for example, when using modifiers while holding down shift
In this case, even if I’m not sure, I don’t think you can change it on Blender native properties because their increments are hard coded. Have you customized Blender units? It could help.
Should be finer the further away your mouse is before you start tuning if i remember correctly.