Video: https://drive.google.com/file/d/1NJgEU3oITAyUqQu0f6W2y9treeCZ2Fhb/view?usp=sharing
I'm trying to make a parasol (outside umbrella thing) in blender, so I decided to use a cloth sim for the bit on top so that it would rest nicely on the top of the frame. The video shows you what is wrong. I created a plane and then used the knife tool to create 2 diagonal edges across the plane, and to create a vertex in the middle. I then moved the 4 outside vertices down. I set that plane to a cloth sim in the physics tab and the frame to a collision.
Quality steps: 20
Quality (collisions): 20
Enabled self collision.
Frame start and end 1 to 30. Sorry for the low quality screen video.
Thanks for your time.