Having some trouble with renders using Ambient Occlusion.
This was rendered with 5 passes and Ambient sampling set to 100%.
Its a reflection in a glass surface but, I've had similar troubles in non reflective surfaces too, although this is the most extreme example so far.
This is it without ambient settings
The ambient render is VGA because its taking a very long time to render at 1080.
Can anyone kindly suggest a cause and possible cure for the problem ?
Thank you
simon