Erpm / torque setting with remote control, Vesc wand

Hi
I'm working on a small electric snowmobile that is controlled by a Vesc wand (and a Vesc 6)
The problem is that the moment of inertia is very large at the start moment and the moment of inertia reduces the force as soon as the snowmobile belt starts to rotate..
This makes it very difficult to drive /start
How should I make settings for / in Vesc wand / Vesc tool to get a smooth start?
grateful for learning

MVH
Lasse