Question
After Effects preview not working | whole preview panel go to jag

My adobe After Effects "preview" panel is in trable, it's jagged like that image.
I had tried change it's viewere quality and resolution parameter into another values (faster / quarter),
but it was still not working.
I am begginer of After Effects so actually I don't know it is normal or error of some sort.
Anyone have ideas for this issue ?
My pc is macbook pro 2019 (16 inch), so I supporse to it's not gpu or cpu problem...
