I am not sure where should I post this question (anyway, other forums give me errors when I try to open them). Let's get straight to the problem...
Have you ever noticed that when your GL application is running and you press ALT + TAB (a dialog pops up) the performance decreases by 70%? Well, that's not really a problem but when the dialog with which you choose a current window disappears the performance is still about only 60% of the previous one. When the window appears some windows settings probably are being made and even when it hides the application runs much worse.
Do you have any idea how to cope with it (at least, how to disable ALT+TAB)?
Thanks in advance!