Well I would suggest to profile your application to find possible performance bottlenecks, because each case is unique and it’s hard to tell what could cause the lag in your specific case.
You can find some tips in this question from StackOverflow. If you update many chart properties at the same time then you can optimize this part by using UpdateSuspender API. Also I would suggest to take a look on examples from our demo application
Hope this will help you!
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