2560x1080 (21:9) is crashing my games!

[mickbasterd]

Hey all, pretty solid setup on my end:
i7-3770k @ 3.5, 16GB G.Skill RAM (DDR3?), Corsair HX 850, Asus Maximus V Gene, Asus GTX 680 DirectCUII, Recon 3d Fatal1ty, 128GB SSD, 2TB HDD, LG 25" IPS Ultra-Wide (New Addition), ASUS 24" & 22" screens, Windows 7 Professional 64-bit (up to date)

Here's my problem: most of my games won't run in fullscreen. When I try, it crashes after 2-3 seconds of loading, screens flash a few times, program minimizes to bar, sometimes program crashes, sometimes it doesn't.
Elite: Dangerous works just fine, even with nVidia Surround enabled (looks incredible too!) WoW has to be run in a windowed mode. BF4 won't load long enough for me to change it. Hitman: Absolution will only run in windowed.

What could be causing this? Everything worked beautifully before upgrading to the ultra-wide. I do have the latest nVidia drivers.

Sidenote: the LG 25" ultra-wide IPS is beautiful, but if you intend to use multi-monitor setups, your basic 16:9/16:10 monitor is actually going to be larger vertically, meaning a far more noticeable seam, as well as not really lining up all that well.

EDIT: Oh, here's my parts list: http://pcpartpicker.com/p/dYFnK8

 

[i7Baby]

Try running same size and type (eg 1080p) monitors. Multimonitor is supposed to be by using the same monitors.

 

[mickbasterd]

I don't generally use the nVidia surround, so the other two monitors are just extended desktops. BUT I did go ahead and disable both additional monitors, and behold it works no problem. I'm still curious tho, and a fair bit annoyed, as I obviously don't want to have to disable both monitors just to play a game, nor do I have the resources to purchase two new ultra-wides (it's so pretty...). It almost seems like it's a conflict in priorities with the desktop. Regardless, seems like a stupid problem to have.

 

[i7Baby]

See http://www.tomshardware.com/answers/id-1989821/monitor-set-resolution-problem-nvidia-surround-gaming-intent.html

 

[mickbasterd]

Again, this applies to nVidia Surround, which I do NOT use, with the very exception of Elite: Dangerous, in which case it works just fine. My problems are arising when using the standard "extend desktop to this monitor" option.
When run in "fullscreen windowed" mode in WoW, it works just fine, even allowing me to see my side screens. When put in real "Fullscreen" mode, it freaks out.
WHEN SURROUND IS ENABLED (which I tried solely for the purpose of this discussion) WoW works fine, with the exception of some serious albeit brief screen tearing on my ultra-wide -- disabled v-sync, went away-- displaying across all screens as expected. BF4 did not fare so well, showing no mouse cursor, distorted picture, and ultimately crashing. Remember, Surround is NOT normally used, nor was it being used in the context of my original problem.