"System specs are I5-3570K OC @4.0GHZ CPU, 16GB Corsair XMS RAM @1866MHZ, 2TB Seagate HDD, AMD Radeon 7870 2gb GPU..."Your system is faster than mine, and your graphics card is MUCH better than mine was a year ago.
This isn't exactly your problem, and the only reason I bring it up is that at the time, Jul 20, 2014, I was using a
AMD HD Radeon HD 6850 with only 1GB of ram on a slower machine than yours.
To make it short, read this post -
OpenLC problem resovedThese were my settings at the time;


And this is what I was running, again - with a slower system than yours.
(So your problem isn't FTX Global)(Ignore the yellow area, this is from another post)
I'm also going to bet that you don't have
FTX Central 2. Download it
(ignore the word Beta) and make sure that FTX Global is
active