trouble with faling through terraine

hi. i’m having some trouble in my fps game i built a terrain and all was fine for a while until the first person controller prefab started falling through the terrain. i have terane coliders and everything but it just wont work. any advice would help. thnks :frowning:

Does the character fall through the terrain immediately or after moving for a while or when falling heavily or… what?

my first person controller falls through the terrain. I tried deleting and adding a new one, but the same thing happens.