Let me ask to my upper manager in regards the random issues with Intel® Software Guard Extensions.
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Thank you for your waiting. In regards to your request please contact our support team via phone, chat or email. They will help you with your issue.
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US phone number is 1-916-377-7000. Monday – Friday 7:00 AM to 5:00 PM (Pacific Time)
I would recommend that you contact Intel Customer Support as mentioned above at http://www.intel.com/content/www/us/en/support/contact-support.html
Also make sure that you get the latest BIOS for your system, it will contain latest fixes and also latest microcode update for your CPU.
I hope this helps,