Thanks for writing.
Setting IsFrozen property randomly will change the frequency of the updates. If you generate random update intervals the effect will be the same. The animations themselves will not change speed, only the transitions from state to state will change frequency.
If you want the tiles to update at the exact same time, but have different states displayed, you should simply unfreeze the tiles, one by one, at each update interval step. You can do so with DispatcherTimer for example.
the Telerik team
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