I was having a terrible time with GT+ flickering on B2B sites. I ran across a solution in the BW forums, and with help from Northview and MacAnthony on the #btp IRC channel, I have solved the problem on my machine.

You need to change the monitor refresh rate. I changed it from 60 hertz to 75 hertz, and like magic, no flicker. To change it, go to control panel, display, settings, advanced, monitor. From there, you should have options to change the screen refresh rate. I changed mine to 75 hertz, and flickering problem is resolved.

This is helping to restore my sanity on B2B. I had actually stopped using GT+ on B2B yesterday because this was so annoying. Thanks guys!