Hm, I never tried to alt-tab. I have it set to fullscreen, too. EDIT: I have a 2nd monitor, I wonder if that is affecting it.

tried that, got "Error:Device reset failed, error 8876086c"

Sorry, really not trying to contradict you here, but I've got 130+ hours in BF4, and it has always worked. I hadn't heard of any issues with BF4 & Shadowplay, and a quick google shows some issues that are marked (solved), or people that post issues, then come back and say "nevermind, got it working". Either way, I really hope this gets figured out/fixed soon. With the recent integration with twitch, I'm sure both the DayZ team and nvidia have plenty of motivation to figure this one out. (Free advertising)

This is the first game that it hasn't worked for me. Out of curiosity, what other games does it not work with?

I have the same issue, but it works with other non-experience games (Starbound, for example)

Having the same issue. When i have the "shadow capture" or whatever going, the game won't even launch properly. It goes to the BIS screen, then a black screen. (Then Geforce Exp. crashes and restarts), and the BIS logo reappears...then the cycle continues. i5 2500k@4.6 evga GTX 680 W7 64 16gb ram (331.93) (1.8.1)