Boid Particles dont collide properly with objects

Hello,i am working on a big animation project,and i wanted to make use of boid particles since its a good idea for insects,fish,cockroaches etc . In my scene i want the roaches to climb the suzzane head,however this happens:

As you can see the collision radius is way bigger than the actual mesh

The boid particle settings:

Suzzane collision settings:

The Suzanne mesh has its transforms applied,i also tried adding it to a seperate collection and using the Boid Particle Collision Collection but that didnt solve the problem.

Thank you for your time! :slightly_smiling_face: