It's working 45-50 for me since i changed the storage limit to unlimited and closed all my facebook games, we can't fix the fact that the game have a bug now that make it ridiculously heavy, but we can do some things to free some space in the computer memory.
People I had a lot of lag it was on 17fps. If it is running low for you left click and press settings, press the folder icon and and then slide the max storage to unlimited.-lucastcorrea Please if it works for you and it is low in the comments page copy and post this again so everyone can see. Merry Christmas!!!
To defeat the Shadow you have to keep dogding and make the meteors fall at her, then pick the dark diamonds that her drops. try attracting her to the edges after she call the meteors and when she is somewhat close jump so she jump and get stuck on the small "roof" until the meteors fall
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