performance between cocos2dx 2.0.3 and 2.2.1

I worked very well in cocos2dx 2.0.3 for android last year.
Today i download the latest 2.2.1 stable version , and rebuild my code.

I find the performance build by the 2.0.3 is better than 2.2.1.
2.2.1 meets some lags during scenarios switching, meanwhile a lot of android GC information can be found in Logcat.

I think the 2.2.1 version should take more memory, and how to avoid the performance drop?

Happy new year and thanks in advance.

Happy new year!

Sorry that I can’t locate the code where slow down the performance from your info above. You can paste more info, especially a sample code whose performance in v2.0.3 is faster than 2.2.1 would be helpful to find out the bottleneck. But to be honest, since v3.0 is already in beta phase, we have no plan to support v2.x anymore. If you’re migrating to a new version, please consider v3.0-beta in the next week. It’s much faster than any version of v2.