Great plugin but assigns too many categories

I have the latest version of the plugin.

My posts average many thousands of words and many of them are over 10,000 words and as many as 30,000 words. I also publish 30 to 40 posts a day.

When I run the plugin it tends to assign too many categories making the categorization of posts kind of meaningless as the posts don’t seem to be under the “right” categories. Wondering if there is a way to set a limit on the number of categories for each post and also that the top, most often found categories are found/used/returned?

Wondering how to fix this. May be willing to look at a custom solution.

Thanks!