Everything should be working now regarding the healthbar/isUnderAttack issues. For a majority of users, this also fixes your problems related to the client consuming abnormally high CPU.
Additionally, the behavior of isUnderAttack/isAttackable has been upgraded and should be more accurate. If you have any issues related to these methods, please post below.
Changelog:
-Fixed isHitBarVisible()
-Improved Character isUnderAttack()
-Improved Character isAttackable()
Have a great weekend!
-The OSBot Staff