dQ larger than Q in cavity analysis

Hi ,

May I ask another question which frequently happens as well in cavity simulations, that what would you suggest to improve the result when dQ is larger then Q as below ? The result of Q larger than dQ should be expected anyway.

Thank you !

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When dQ is larger than Q, the results are likely invalid. However, it might not be too easy for me to tell you exactly what you need to modify for your simulation file. If you dont mind uploading your file here, I am happy to take a look at it.