Looks like t400 is still required.
I used library 2.9.5 (yes it works with your sample)
default
Code:
Library loaded: oo2core_9_win64.dll
Streams: 13239 / 19764
Time: 00:01:06 (CPU 00:05:06)
Size: 1.76 GB >> 1.85 GB
Done!!!
t400
Code:
Library loaded: oo2core_9_win64.dll
Streams: 19763 / 19764
Time: 00:00:30 (CPU 00:01:33)
Size: 1.76 GB >> 1.87 GB
Done!!!