@BichonBistro If you have clip studio it is under "tool property", there is a stabilization bar, there is only 5 settings.
In Photoshop CC (not sure about other versions) it is under "smoothing" which is to the right of opacity and flow in the top bar. This setting goes by a percentage slider, from 0 - 100% and has much more finite control.
If you have a wacom, (maybe some other tablets have this option too?) adjusting the tip sensitivity can help too. I shake, so if the tip is super sensitive, it will show every jiggle, and line thick ess will jump around. Firm up the tip, and you have more control/forgiveness. When I color, I usually soften the tip pressure. So I keep then wacom preference panel open.
Can't really stabilize with vector, but it's nice that nodes are editable, can adjust a line with the handles. I knew a guy that would just quickly and sloppily lay out lines, then just go back and adjust each node to what he wanted.