CPU usage increases largely when you have multiple animated emoticons in conversations in Skype for Business Content provided by Microsoft Applies to: Skype for Business Select Product Version All Products This issue occurs after you apply the April 14, 2015 update for Microsoft Skype for Business. NoteTurning off emoticon animation in the Option dialog box cannot prevent CPU draining. CPU usage will not decrease until you close the conversation windows. Resolution To resolve this issue, install the May 12, 2015, security update for Skype for Business. Last Updated: Jan 7, 2017 Did this solve your problem? Yes No Tell us what we can do to improve the article Submit Thanks! Your feedback will help us improve the support experience.