Play your game in Window mode.
Even the mode "Borderless" will basically be "Fullscreen" but a lot more "Alt+Tab" friendly.
I use to Alt+Tab the game in Fullscreen mode, and there was always a chance my video card would crash my computer.
Ever since I switched to Borderless, it works very well and I haven't had a problem in months.
Just be sure to NOT alt+tab when the client closes and loads the game. (After you lock in champions and the game is about to start) if you do, theres a chance the game will start in the middle of the screen, and you'll only be able to see the top corner of the game (So only Alt+Tab when you're playing - not loading in)
Other than that, Borderless works great.
Even the mode "Borderless" will basically be "Fullscreen" but a lot more "Alt+Tab" friendly.
I use to Alt+Tab the game in Fullscreen mode, and there was always a chance my video card would crash my computer.
Ever since I switched to Borderless, it works very well and I haven't had a problem in months.
Just be sure to NOT alt+tab when the client closes and loads the game. (After you lock in champions and the game is about to start) if you do, theres a chance the game will start in the middle of the screen, and you'll only be able to see the top corner of the game (So only Alt+Tab when you're playing - not loading in)
Other than that, Borderless works great.
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I've tried all sorts of things. Even reinstalled the game, no luck. Everything else is running just fine on my comp, this is the only thing that's out of whack. If anyone has a suggestion, love to hear it. Thanks