If you are doing animation intense stuff with jQuery[^1] you probably have noticed that there can be problems with animations, especially when you try to run multiple animations at the same time. Without going into details how you should handle the new features (you can go thru them at the jQuery release note[^2]) just 2 quick fixes for your current projects: **1. Use Units** One problem can exist if you you call your animation like this: Using this code snippet, the lags should be fixed: **2. Tweak opacity first** like you can see in [this example](http://jsfiddle.net/69eEL/)[^3], the animation does not run as expected. However, this can be fixed by *1.* commenting out the *opacity* part (which is not an option in most cases) or *2.* by placing the *opacity* line on top of every block, like in [this example](http://jsfiddle.net/hctX2/)[^4]. That's it. In my case, both didn't solve the problem completely (because I needed 2d transformations, which caused bugs whatever I did) s
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