Did you check Tracker to see if there are any Reviews or Forms listed? In case there are any, Synchronizer must be synchronizing them, thats why you see AdobeResourceSynchronizer running in Activity Monitor. Removing all items from Tracker will automatically lead to closing of AdobeResourceSynchronizer.Can you share a screenshot of Activity Monitor where you see the high CPU usage of this process and also a screenshot of Tracker (from Acrobat X->Comment pane->Reviews->Tracker)?
↧