Hi Nigel, thanks for getting back to me.
My SSD has 80% space free with only 30G being used... same on the macbook... I did a clean install of Yosemite the other week to make sure both systems were matching... there is barely anything on the computer.
I really can't see it being a memory issue, as outlined about everything duplicates fine on the same systems within Logic 9. It is 100% an issue with Logic X and not my systems... otherwise I would see the same problem within 9.
Restart doesn't make any difference, same problems.
If I open up the Activity Monitor and play the project the CPU is working at around 25%, RAM dedicating 700MB to Logic... then when I duplicate the track the CPU spikes to 115% and logic x shows as (not responding) RAM stays the same then after 30 seconds or so the track duplicates and everything drops to normal.
Here is the report:
EtreCheck version: 2.2 (132)
Report generated 5/11/15, 3:28 PM
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Click for support] links for help with non-Apple products.
Click the [Click for details] links for more information about that line.
Hardware Information: ℹ️
iMac (27-inch, Late 2013) (Technical Specifications)
iMac - model: iMac14,2
1 3.59 GHz Intel Core i7 CPU: 4-core
16 GB RAM Upgradeable
BANK0/DIMM0
Empty
BANK1/DIMM0
Empty
BANK0/DIMM1
8 GB DDR3 1333 MHz ok
BANK1/DIMM1
8 GB DDR3 1333 MHz ok
Bluetooth: Good - Handoff/Airdrop2 supported
Video Information: ℹ️
Intel HD Graphics 4600
DELL U2412M 1920 x 1200
System Software: ℹ️
OS X 10.10.2 (14C109) - Time since boot: 5:58:12
Disk Information: ℹ️
Samsung SSD 850 PRO 128GB disk0 : (128.04 GB)
EFI (disk0s1) <not mounted> : 210 MB
Yosemite (disk0s2) / : 127.18 GB (96.58 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
WDC WD1003FBYZ-010FB0 disk1 : (1 TB)
EFI (disk1s1) <not mounted> : 210 MB
Work Pig (disk1s2) /Volumes/Work Pig : 999.86 GB (997.35 GB free)
WDC WD30EZRX-00SPEB0 disk3 : (3 TB)
EFI (disk3s1) <not mounted> : 210 MB
Boot OS X (disk3s3) <not mounted> : 134 MB
Time Machine (disk4) /Volumes/Time Machine : 3.00 TB (1.77 TB free)
Core Storage: disk3s2 3.00 TB Online
WDC WD1003FZEX-00MK2A0 disk2 : (1 TB)
EFI (disk2s1) <not mounted> : 210 MB
Work Horse (disk2s2) /Volumes/Work Horse : 999.86 GB (392.16 GB free)
USB Information: ℹ️
Generic Flash Card Reader/Writer
Ploytec GmbH SPL Crimson
Apple, Inc. Keyboard Hub
Broadcom Corp BCM20702A0
Apple, Inc Apple Keyboard
Focusrite A.E. Ltd Impulse
Brother HL-2030 series
Moog Music, Inc. Moog Minitaur
Gatekeeper: ℹ️
Anywhere
Kernel Extensions: ℹ️
/Applications/Radio Silence.app
[loaded] com.radiosilenceapp.nke.filter (1 - SDK 10.7) [Click for support]
Launch Agents: ℹ️
[running] 9ZTHPRB4MV.com.soundradix.TTLWrapperAgent.plist [Click for support]
[loaded] 9ZTHPRB4MV.com.soundradix.TTLWrapperAgent.SL.plist [Click for support]
[loaded] 9ZTHPRB4MV.com.soundradix.TTLWrapperSandbox.plist [Click for support]
[loaded] 9ZTHPRB4MV.com.soundradix.TTLWrapperSandbox.SL.plist [Click for support]
[loaded] com.radiosilenceapp.agent.plist [Click for support]
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist [Click for support]
[loaded] com.microsoft.office.licensing.helper.plist [Click for support]
[running] com.projectosx.clover.daemon.plist [Click for support]
[loaded] com.radiosilenceapp.nke.plist [Click for support]
User Launch Agents: ℹ️
[loaded] com.bittorrent.uTorrent.plist [Click for support]
[running] com.vladalexa.MagicPrefs.plist [Click for support]
User Login Items: ℹ️
iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
USBOverdriveHelper UNKNOWN (missing value)
Internet Plug-ins: ℹ️
SharePointBrowserPlugin: Version: 14.0.0 [Click for support]
FlashPlayer-10.6: Version: 17.0.0.169 - SDK 10.6 [Click for support]
Flash Player: Version: 17.0.0.169 - SDK 10.6 [Click for support]
QuickTime Plugin: Version: 7.7.3
Default Browser: Version: 600 - SDK 10.10
Safari Extensions: ℹ️
Adblock Plus
3rd Party Preference Panes: ℹ️
Flash Player [Click for support]
MagicPrefs [Click for support]
Secrets [Click for support]
Time Machine: ℹ️
Skip System Files: NO
Mobile backups: OFF
Auto backup: YES
Volumes being backed up:
Yosemite: Disk size: 127.18 GB Disk used: 30.60 GB
Destinations:
Time Machine [Local]
Total size: 3.00 TB
Total number of backups: 24
Oldest backup: 2015-04-14 12:42:10 +0000
Last backup: 2015-05-11 14:14:14 +0000
Size of backup disk: Excellent
Backup size 3.00 TB > (Disk size 127.18 GB X 3)
Top Processes by CPU: ℹ️
28% QuickLookSatellite
17% Logic Pro X
3% WindowServer
3% fontd
1% coreaudiod
Top Processes by Memory: ℹ️
1.28 GB com.apple.WebKit.WebContent(3)
1.03 GB kernel_task
885 MB Logic Pro X
442 MB softwareupdated
442 MB Safari
Virtual Memory Information: ℹ️
5.72 GB Free RAM
10.00 GB Used RAM
0 B Swap Used
Diagnostics Information: ℹ️
May 11, 2015, 09:30:25 AM Self test - passed