I have noticed in the last couple weeks that "Teamviewer_Service" is using excessive CPU resources (often over 100%). This is version 14.2.8352 for Mac. It is noted on latest version of Mohave, as well as High Sierra. I have seen this on three different machines. These are machines that are just running Teamviewer, and are not active in screen sharing. It seems to take awhile before this behavior is noted, so it doesn't happen right away after startup.