Nvidia Flex as Collison Problems

Hello everybody,

i need your help. i am using Nvidia-Flex Particels as Collision but it doesn’t work correctly. The gears are touching and affecting each other without being in Contact (visually). i did add “Get World Delta Secounds” to apply the Delta Time in UE4.
But it doese not solve my Colision Problem. now i am trying to finde another solution to make My Gear rotate and affect the second gear correctly in spite of the Nvidia-Felx Collision.