Very slow category handling after 3.8

[Milbo]

Yep, I did not check that idea. You know what we had and where we come from.

But I just see in general, that you for example did not notice any of my enhancements the last year. Because you could also use them to make your way even faster.

And next this is a project. What about you deliver good and up to date code. Of course I take it, I will also check the idea with a big general query. But too late for this release.