Board Thread:Game Discussion/@comment-2607:FEA8:55A0:64D:305F:E2E8:4871:382-20180412005707/@comment-28169398-20180412170810

There are likely licensing considerations surrounding variations as well.

V6.2 definitely made some changes to memory optimization, and they were not good ones. Either they were running late and didn't bother to do optimization or they are making a change and older devices are struggling. Also the app seems to be dirtier than in the past. You end up needing to restart sooner and more often to get rid of lag. My read on this is that the app is not cleaning up memory as well at the end of processes such as running races or ads.