Yet here is an entirely different perspective in a thread about CFD on this forum :
CFD is still not complete, nor is it adequately documented (though I believe a recent SDK update has improved things slightly). There is no ‘need’ to implimented it other than some end users’ desire to have it just because it is the latest thing. When it is fully understood, documented and proved to be working accurately, then it may become desirable.
Regarding the PA38, it was built accurately prior to CFD becoming available. In that state, it was described by one of our testers (a serving RAF pilot) as having the best incipient spin characteristics he had seen in a sim. Adding the ten or so lines of CFD to the flight model and it won’t stall, let alone spin despite making various adjustments to try and compensate. I don’t believe that at the moment there is any urgent need to release it so work will continue. IF there is a way to get it to stall and spin correctly with CFD, all well and good. If better results are obtained with the older method, then that is what will be released.
Edit: to save repeating myself too much, here is a post I made a week ago outlining my views on CFD as it currently stands: CFD is amazing - #60 by GrimPhoenix9349