Questions about performance degradation when used with DNS features in GTM solutions

Hi team.

I apologize for the late response.

I tried to ask a question using the translator and accidentally posted the original text.

Here's the situation I'm in and the questions I have.

Situation : A customer is using Window DNS, and in this configuration, an F5 device has been introduced for GSLB purposes.

However, the performance of Window DNS is not good, so I am checking if it is possible to use the DNS function on the F5 device introduced for GSLB.

Q: I have heard that the performance of the F5 GTM solution degrades when used for DNS functions other than GSLB (I heard from someone that the performance degrades a lot when using BIND).

So, I've been looking for official F5 documentation to see if that's true, but I'm not finding it, so I'm asking.

Thanks.