RULE NUMBER ONE NEVER USE EXTREME VALUES LIKE 0 or 255 in you r color picker
Actually, that is rule number two. Rule number one is "Never ever write your posts in capital letters"
As for the problem. I would try following:
1, Increase rounded corners samples. Try to double them. Let's say 20.
2, Decrease GI/AA balance to something like 4-8, to focus more samples in Antialiasing.
3, Your chandelier is very fine, made of very tiny superbright spots, and your edges very tight and reflective. Especially if you have also very reflective materials, it could easily create this random spots effect. But that means it would also look that way in real world. The reason why it looks so weird on the rendering is because there are no secondary optical flares. In real world, or when you take a picture with camera, you always see some glares and flares on the small bright spots. If you took a photo somehow without these effect, all those highlight would look like fireflies.
So you can try to make selection by brightness in photoshop, and apply very small tight glares on all those bright spots to make it look natural and realistic.
Here's an example:
You can see this car has a lot small bright spots reflecting on it, but they all have little glow outline around them. If those blurry outlines weren't there, then it would look wrong to your eye. It would look like fireflies ;)
4, As a last resort, you can try disabling chandelier lights/components visibility for reflection, and then create some simpler object resembling chandelier, maybe just textured cylinder, and make it invisible to everything except reflections ;)
