Ok, as I said before I ran AHT 3 times and no trouble was found. I have now freed up an additional 80 GB of free space (160/250 GB free) through moving stuff to my external drive. I've also verified time capsule is backing up correctly.
It definitely seemed to be running more smoothly but this morning I ran into the issue again where the system was basically unresponsive and the windows were very slow to move/update. The system actual got stuck when I tried to restart it, so I ended up having to hard reset by pushing the power button.
Here are the minutes from the Console when this happened:
5/2/15 8:58:12.000 AM kernel[0]: Google Chrome He (map: 0xffffff802aefd4b0) triggered DYLD shared region unnest for map: 0xffffff802aefd4b0, region 0x7fff88800000->0x7fff88a00000. While not abnormal for debuggers, this increases system memory footprint until the target exits.
5/2/15 8:58:41.000 AM kernel[0]: Google Chrome He (map: 0xffffff801aa15780) triggered DYLD shared region unnest for map: 0xffffff801aa15780, region 0x7fff88800000->0x7fff88a00000. While not abnormal for debuggers, this increases system memory footprint until the target exits.
5/2/15 8:59:43.000 AM kernel[0]: Google Chrome He (map: 0xffffff802aefd4b0) triggered DYLD shared region unnest for map: 0xffffff802aefd4b0, region 0x7fff88800000->0x7fff88a00000. While not abnormal for debuggers, this increases system memory footprint until the target exits.
5/2/15 8:59:50.388 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.397 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.407 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.417 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.426 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.436 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.446 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.455 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.465 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.474 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.484 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.494 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.503 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.513 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.524 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.533 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.543 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.552 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.562 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.572 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.581 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.590 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.600 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.610 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.620 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.636 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.654 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.664 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.673 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.683 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.692 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.701 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.710 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.719 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.730 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.739 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.749 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.761 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.770 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.781 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.791 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.802 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.812 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.821 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.831 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.840 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.850 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.860 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.869 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.879 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.888 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.897 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.906 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.915 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.924 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.933 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.942 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.952 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.965 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.973 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.983 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 8:59:59.992 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 9:00:00.003 AM com.apple.time[183]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).
5/2/15 9:00:40.181 AM com.apple.launchd.peruser.501[180]: (com.apple.iDVD.34528[1879]) Exited: Terminated: 15
5/2/15 9:00:42.758 AM com.apple.launchd.peruser.501[180]: (com.apple.iPhoto.34880[3853]) Exited: Terminated: 15
5/2/15 9:00:42.791 AM Dock[202]: CGSReleaseWindow: Invalid window 1062
5/2/15 9:00:49.241 AM com.apple.launchd.peruser.501[180]: (com.google.Chrome.115664[17186]) Exited: Killed: 9
5/2/15 9:01:19.076 AM xpcd[199]: Info.plist does not contain an XPCService dictionary: /System/Library/Frameworks/Security.framework/XPCServices/SecurityAgent.xpc
5/2/15 9:01:21.672 AM findNames[22481]: dispatch_semaphore_wait() time out: -[IMKUserDictionary reloadWithCompletionHandler:]
5/2/15 9:01:22.757 AM xpcd[199]: findNames[22481]: registration request failed: (0x10, 0x3) xpc_domain_import() failed with code 0x44e
5/2/15 9:01:30.292 AM com.apple.launchd.peruser.501[180]: (com.apple.PackageKit.InstallStatus) Throttling respawn: Will start in 8 seconds
5/2/15 9:01:31.075 AM WindowServer[97]: CGXGetConnectionProperty: Invalid connection 55299
5/2/15 9:01:31.076 AM WindowServer[97]: CGXGetConnectionProperty: Invalid connection 55299
5/2/15 9:01:31.076 AM WindowServer[97]: CGXGetConnectionProperty: Invalid connection 55299
5/2/15 9:01:31.076 AM WindowServer[97]: CGXGetConnectionProperty: Invalid connection 55299
5/2/15 9:01:31.076 AM WindowServer[97]: CGXGetConnectionProperty: Invalid connection 55299
5/2/15 9:01:31.076 AM WindowServer[97]: CGXGetConnectionProperty: Invalid connection 55299
5/2/15 9:01:31.077 AM WindowServer[97]: CGXGetConnectionProperty: Invalid connection 55299
5/2/15 9:01:31.077 AM WindowServer[97]: CGXGetConnectionProperty: Invalid connection 55299
5/2/15 9:01:31.077 AM WindowServer[97]: CGXGetConnectionProperty: Invalid connection 55299
5/2/15 9:01:31.530 AM com.apple.launchd.peruser.501[180]: (com.apple.AirPlayUIAgent[1507]) Exited: Killed: 9
5/2/15 9:01:31.530 AM com.apple.launchd.peruser.501[180]: (com.apple.EscrowSecurityAlert[3793]) Exited: Killed: 9
5/2/15 9:01:32.148 AM com.apple.launchd.peruser.501[180]: (com.apple.noticeboard.agent[5571]) Exited: Killed: 9
5/2/15 9:01:32.315 AM com.apple.launchd[1]: (com.apple.ShareKitHelper[238]) Exited: Killed: 9
5/2/15 9:01:32.316 AM com.apple.launchd[1]: (com.apple.internetaccounts[234]) Exited: Killed: 9
5/2/15 9:01:32.346 AM com.apple.launchd.peruser.501[180]: (com.apple.gamed[193]) Exited: Killed: 9
5/2/15 9:01:32.831 AM loginwindow[43]: ERROR | -[ApplicationManager(AppleEventHandling) sendQuitEventToApp:withDelay:] | sendQuitEventToApp (Adobe Desktop Service): AESendMessage returned error -1712
5/2/15 9:01:32.845 AM com.apple.launchd.peruser.501[180]: (com.apple.ImageCaptureExtension2.3200[547]) Exited: Killed: 9
5/2/15 9:01:32.919 AM com.apple.launchd.peruser.501[180]: ([0x0-0x29029].com.apple.AppleSpell[1391]) Exited: Killed: 9
5/2/15 9:01:33.137 AM com.apple.launchd.peruser.501[180]: (com.adobe.acc.AdobeDesktopService.88560.985895B2-9814-4A24-BF5E-51D561DC4BC1[4 77]) Exited: Terminated: 15
5/2/15 9:01:42.868 AM loginwindow[43]: ERROR | -[ApplicationManager quitPrivateProcesses] | Private process did not quit
5/2/15 9:01:43.952 AM sessionlogoutd[22487]: sessionlogoutd Launched
5/2/15 9:01:43.987 AM loginwindow[43]: ERROR | processNotificationManagerLSNotificationCallBack | LWCASProcessNotificationManager UNEXPECTED NOTIFICATION of type: kLSNotifyApplicationBirth
5/2/15 9:01:44.030 AM sessionlogoutd[22487]: DEAD_PROCESS: 43 console
5/2/15 9:01:44.260 AM com.apple.launchd.peruser.501[180]: (com.adobe.AdobeCreativeCloud[357]) Job appears to have crashed: Segmentation fault: 11
5/2/15 9:01:44.264 AM loginwindow[43]: ERROR | -[Application setAppContext:] | Unable to get PID for context [0,53261]
5/2/15 9:01:44.287 AM fseventsd[50]: Events arrived for /Volumes/My Passport Studio after an unmount request! Re-initializing.
5/2/15 9:01:44.287 AM fseventsd[50]: creating a dls for /Volumes/My Passport Studio but it already has one...
5/2/15 9:01:44.876 AM loginwindow[43]: ERROR | -[Application hardKill:] | Application hardKill returned -600
5/2/15 9:01:45.000 AM kernel[0]: hfs: unmount initiated on My Passport Studio on device disk1s10
5/2/15 9:01:46.904 AM shutdown[22488]: reboot by nobody:
5/2/15 9:01:46.000 AM kernel[0]: Kext loading now disabled.
5/2/15 9:01:46.000 AM kernel[0]: Kext unloading now disabled.
5/2/15 9:01:46.000 AM kernel[0]: Kext autounloading now disabled.
5/2/15 9:01:46.000 AM kernel[0]: Kernel requests now disabled.
5/2/15 9:01:46.905 AM shutdown[22488]: SHUTDOWN_TIME: 1430571706 904517
Any idea of what's going on? Should I ditch Chrome, as MichelPM noted?