CVar predictedHealth

It's best to leave this CVar enabled, as predictedPower is known to cause weird bugs like DK runes not activating as of 4.0.3a
Whether or not to use predicted health values in the UI.
==Default setting==
;1
==Possible settings==
;0 :Disabled
;1 :Enabled
==Changing this setting==
In-game, type the following
 /console predictedHealth setting
Alternatively, you can exit wow, open the Config.wtf file, and add the following line:
 SET predictedHealth setting
==Patch changes==
* 
predictedHealth