Alt-tabbing issue

[Vemu]

Hey guys, I've come to you hoping you might be able to help me. Ever since I bought this computer which was around April of this year, I've had a major issue with alt-tabbing while playing a game. It doesn't matter what game, what maker, what quality, etc... If I'm playing a game and alt-tab out of it, I literally have to play the lottery with the game in order to get back in, it doesn't matter if I click the game, try to alt-tab back in, or do any kind of key combination, It's literally a 1/100 chance that I'll get back into the game.

This makes it infuriating to play online games competitively especially if I have some mouse or other random issue and HAVE to tab out, I get screwed. It does occur less often in windowed mode, however it still happens. Is there any chance any of you might have the answer?

Thank you in advance for any responses,

A gamer in need