Flickering while 2boxing

[fishstix]

I looked around and there weren't any solid fixes. I recently reinstalled ffxi but when I 2box, the 2 windows sorta bleed together with transparent flickering of the background and character models/names. I tried messing around with the nvidia control panel settings with no luck. My computer specs:
amd phenom II x4 3.4ghz
4gb ddr2 1066 ram
nvidia gtx 260
driver version: 185.85
Using windower 3.41 with updated hook.dll on windows7

I figure I probably need to try other driver versions, but not sure which, any ideas?

[Starr]

I used to have this problem til someone showed me to use windower GUI with 2 different sized FFXIs, if you are trying to run both at the same size on top of each other it will not work.

[fishstix]

They overlap, but the overlapping parts isn't bleeding through. Like if there was a house in the top right corner of box1, it'll appear in box2 as a flickering white outline in the same location, regardless of where I position the windows.

I thought it might have to do with running multiple monitors, but after disabling it, still there. I've messed around with all of the nvidia control panel options I can think of

[fishstix]

well, downloading the newest 191.xx drivers fixed this