Re: Plants vs Zombies Garden Warfare keeps crashing when I'm in-game.

Things to check..

1. Update your graphics driver.
2. Update your sound driver.
3. Update DirectX.

So if you're playing a game, and it's slowing down or crashing, take a look at what other programs you were running at the same time.  Your anti-virus program should always be running in the background, sure, but if it's downloading updates or running a scan of your computer, then that's going to cause a resource drain that could affect your game.  

I already tried installing GPU drivers from scratch. I even used a software to uninstall my drivers and reinstall the latest ones. I just had this problem since I upgraded from GT 630 to GTX 970. Does Ultra settings makes game crash?

Please give these a shot from me...

NVIDIA Software & Drivers

http://us.download.nvidia.com/Windows/347.09/347.09-desktop-win8-win7-winvista-64bit-international-whql.exe

CCleaner

http://download.piriform.com/ccsetup501.exe

 CCleaner can help you clean out the Registry so you'll have fewer errors.

Direct X Update

http://download.microsoft.com/download/1/7/1/1718CCC4-6315-4D8E-9543-8E28A4E18C4C/dxwebsetup.exe

the problem seemed to go away when I changed the screen type to Borderless Window. Strange but it works. Thanks to every1