Yes, I confirm that is still the case.
I guess you told about this feature :
With Experience MultiPV set to true (default), few of moves with shallow depth are written to the experience file :
And as you can see, these optional moves :
- don't help improve the quality of the most efficient move
- they just make the file heavier
- it takes longer to load it
- it takes longer to defrag it
- it unnecessarily slows down the engine
[for engine trainers] if we reinforce this position, the experience data become more consistent :
