Light leaks and errors

[stevesideas]

Ok cool. I'll have to try these options out. Thanks

[Subburb]

+1 for the DE option... As 3DMK said, it's tied to HSPH value.
you can estimate the desired sampling value of this tool by this formula : desired DE subdivs = DE mult * HSPH * Global multiplier

in your case, if you need 16 subdivs for DE, then DE mult = 16 / (70 * 1) = 0.23. Remaining grain will mostly depends of the DE radius.