Posted yesterday on the official forums was an update by the Systems Team concerning resistances that monsters have in PvE.  Monsters normally have have about a 1% resistance rate at low levels that slowly rises at a pre-configured rate until it reaches around 10%.  However, shortly after the release of Mirkwood it was discovered that after level 43 monster resistances “…dropped down by exactly half, and stayed that way all the way to level cap.”  What this means is that all tactical damage done to a monsters post level 43 was more than it should have been.

What does this mean?  Well, with Book 1 the resistance rates have been fixed and they should now be at around 10% for all levels past 43.  Of course this resistance can be reduced with traits, gears, and legacy options.  All other resistances remain the same, considering that they were never affected in the first place.  Of course if you fight monsters that are higher level, are located in specific spaces within the game, or have special buffs/natural resistances then you may find that resistance rate higher.  So if you travel back to Mirkwood and discover that you’re now hitting for less with tactical skills you’ll know why.