Lines are appearing when I create a curved shape and add transparency

[Nayla26461895yue8]

These lines are appearing when I create a curved shape and add transparency to it. I'm not sure where they are coming from and I'm not being able to remove them. Can you please help. 

[Monika Gause]

Does it go away when you View > Preview on CPU?

[Nayla26461895yue8]

Yes it disappears, but something else changed when I clicked this Preview on CPU per ex the zoom option 

[Monika Gause · Accepted solution]

This was just a test.

It means that the issue is with your graphic card, so it's just the display. You can try if a driver update solves it, but if not, never mind. You just need to check the CPU preview whenever you're not sure.