One of the bugs in running LB2 on fast systems (in addition to the useless rockets) is excessive ROTOR RPM LOW when descending rapidly or when making sudden large collective changes. I choose to call it inadvertent modelling of Vortex Ring State or Settling with Power, and try to guard against it.
Along with the bug is the SUPER ENGINES... You can get that thing up to over 160 knots in level flight that was never possible before. Climbing the heights of Azerbaijan, though, is still a chore for the straining engines.
I never paid that much attention to the maximum over-torque as I try to avoid it. 120% sounds about right to me...but it still doesn't help the 'fast cpu rotor rpm low' issue.