Hi Pixeldamage,
If increasing the agent radius in the movement component is not working try this:
- Click on the capsule component.
- In the details panel go to the collision tab.
- Change Cane Character Step Up On to Yes.
I think the agents get slightly pushed into one another now and then, making the engine think when the collider they are standing on top of each other, With this feature enabled this is allowed. Otherwise it tries to force the character of.