So the main issue with the reduced forecast to 100ktpa is mainly...

So the main issue with the reduced forecast to 100ktpa is mainly an issue of reduced recoveries (currently at just under 50%) versus 70% (what PLS etc are getting).

Most producers went through the same process, including PLS, early in their mine life. It is universally a problem.

It has to do with getting the feedstock processes right, and getting the right additions to filter out different impurities.
This is mostly a processes of trial and error, and a unique process for every mine an orebody. It usually takes about a quarter and a half to get right.
As CXO pointed out, all major mines have managed to get this up to 70+% eventually, and they are confident of getting this up.

Unfortunately there is not much you can do to speed this up, as each ore is slightly different.

Given it’s only a few weeks our DMS has been running, I am fairly confident we will get to an industry standard of 70% with a bit of time, and beat our forecast.