Whenever I alt tab out of some games they crash.... I know that the solution is to play on windowed, but is there any other solutions?
What games in particular?
Some games will let you minimize without issues. Some will do it sometimes, then other times won't. Some games just don't do it at all and will crash if minimized and brought back up.
Aside from running them in windowed (or full-screen windowed) mode, there isn't much that can be done. It just depends on if the game will run properly in the background or not.
I had issues with World of Warcraft Full Screen Mode after version 4.xx Cataclysm of the game because the game will disconnect you from the blizzard server if you minimize the game when moving in the game to different zones.
Odd, never had that problem myself, and I'm often minimized when going to new zones, looking stuff up and whatnot. I've never switched it out of full screen mode.