Here is described how to avoid fireflies that can be generated sometimes when rendering directly in Cycles. This works in Flared 1.8.54 only. Soon on the stores for free for all customers.
Flared is an add-on developed for Blender for generating complex lens flares effects.

Buy it on Blender Market:
https://blendermarket.com/products/fl...

Buy it on Gumroad:
https://flared.gumroad.com/l/flared

Official Website:
https://www.blenderlensflare.com