Dual Thunderbolt Monitors using Bootcamp

Hi all,

I've done some research, but I can't find my answer. I am trying to use two thunderbolt monitors within bootcamp. However, only one monitor is detected (although the USB hub on the second one works).

I've tried searching for the monitor in the AMD FirePro Control Center, and through the Windows Display Settings. Only 1 thunderbolt appears.

Both monitors are plugged in during startup of Windows. I've tried directly connecting both, and have also tried daisy chaining from the working thunderbolt to the non-working (with a restart, of course).

Any suggestions?

I am using a Mac Pro Late 2013, Windows 8.1 64 Bit.