User reflects iOS 5.1.1 upgrades cause some game crashes

Perhaps some users have started to upgrade iOS 5.1.1, waiting for the perfect escape. However, from the upgraded users complained that the upgrade 5.1.1 will cause some game crashes! Specifically, some games run at a significantly slower speed, and some even die in the running interface. This is a problem that can not be ignored, you also encountered a similar situation? Of course, not all games will collapse, and from the Apple discussion area, there are three major games affected by the upgrade, AR Monsters, Boomchain and Infinity Blade 2. Oddly, some users say that backstage sometimes doesn't show some of the games they're running. Some speculate that this is related to memory footprint. But when they close the game running in the background, the card-dead game is not immediately closed, at least 10 minutes to shut down. Logically, if the system detects that there is not enough memory, then when the user shuts down some of the applications should immediately stop running. Perhaps iOS 5.1.1 is having trouble processing memory. Although iOS 5.1.1 has not brought us much new features and features, at least some users have sensed that the iphone 4S, which upgrades iOS 5.1.1, has saved a lot of power.