Collider problems with Speed

Hi, I am working on a game where an object fall down from the top of the screen and the player must touch these objects to trigger some actions. but sometimes when the player touch this object nothing happen, the player must touch three or four times to trigger an avent, did someone face a problem with colliders and speed of the objects? how did you resolved it?

I appreciate your answers! thanks you.

Javier.

Hi, we are using fixupdate.