If you need to alt-tab frequently, it's a good idea with pretty much any game to use windowed mode.
Alt-tabbing frequently isn't the bug; alt-tabbing occasionally can cause crashes. I mean, alt-tabbing in most games on slower computers can cause slowness, sure. But this isn't a performance issue, it's a "I essentially take a 50/50 chance every time I alt-tab to see if my game crashes" issue.
And windowed mode is, at best, yet another workaround. Should I also mention that windowed mode rules out scrolling with the mouse?