Hi Rowan, Ondra,
Tested with the last RC, it's strange.
First batch, the multithread parsing is faster, with a gain time compared to the first test (with +25% instances). For the second batch (*_02), the multi is slower than the monothread and the total gain time is lost compared the the 1st test.
Performance bug with Forest Pro ? The real problem remains the same, the difference between mono and multi is small.