Is there any benefit to vectorization of following code in matlab?

[poster]

for i=1:numResults

    tempStructure=struct;

    for j=1:options.numDates

        stringJ=num2str(j);

        [tempStructure.(['temp' stringJ]),tempStructure.(['tempHHI' stringJ])]=fillTemp(resultsStructure.(['results' stringJ]),resultsStructure.(['resultsHHI' stringJ]),options.resultSize,i);

    end

end

Here, we can assume that resultStructure has fields (specified dynamically) before the loop and every field is present in resultStructure.

fillTemp is a complex function that is very difficult to vectorize.

Is there any benefit in removing "for" loops for i and j by way of bsxfun in the code above to improve performance? Any alternative method for speeding up the above code is also appreciated.

Note: I understand the way I am defining and using structures with dynamic fields is not the most optimal solution but this is a working solution and I do not want to tinker with the working solution.
I am using Matlab 2018a.

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