Speed up Simulink model which uses a Matlab function block

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Matt 2015-10-14

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https://ww2.mathworks.cn/matlabcentral/answers/248608-speed-up-simulink-model-which-uses-a-matlab-function-block

Hello,

I would like to speed up the running of my Simulink model that uses a Matlab function block. Without that function block my model runs fine and fast. When running the function in isolation, I timed it to 0.07s using tic/toc. But when I include the function block in my Simulink model, it runs very slow (even when the function block is not connected to anything).

Is that a normal behavior or is there anything to improve?

Thanks!