Sadly I have the Exact Same Experience.

I was very excited to receive this appliance, even at 1.6 it is still a nice system.

Worked great for about 2 days.

Now I hash at 1.3 average.

Truthfully support is so overwhelmed and is given Nothing to actually help the customer, or provide compensation.

It seems some units are fine, others have issues.. not sure if its poor quality parts or design flaws.

All I know is i've tried every firmware version available and also some "custom packages" they assembled for me after having a heart to heart with one of the 3 or 4 actual engineers they staff over at CT.

Im an engineer by trade, but don't want to break the seals on the box in case it gets worse and I Need to RMA it.

CTA 0 is no issues runs a little over 800.
CTA 1 runs at 500 because 3 cores do not come online.

Newer firmware indicates that no voltage is being delivered to these cores.  not sure what can be done other than RMA.  

This really doesn't make sense the way that they go about doing it.  it could take 3 weeks to get the unit back.  at that point you have lost significant profits that you will never recoup.  All this, and NO compensation or even understanding from CT about how disappointed I am over the experience with them.  its really a sign that they are after short term riches, and not long term wealth.  

Shame considering how far they came, only to fail... They may not survive this if they burn every bridge and have all these people talking negative about them.

I will let you know how my story ends.  Im still waiting for support to call me back...  I sound like every other poor soul here waiting for CT to step up and do the right thing.

Summary to date:

What I actually Paid for:  2th
I was Forced to Accept:  1.6th
What I actually got:       1.3th

Im going to TRY to be optimistic about the outcome..

I wish you the best of luck.  Hopefully your issues will sort out soon.