Portal working really slow

Hi!

I have a portal running for a few versions, and so far it has always worked fine, but since the last update (23.4) it goes really slow, loading some interfaces can take up to 15-20 seconds and to verify that it was not a problem of API integrations or database queries, I have reproduced the application on a Site, and it goes much faster.
I don't know if anyone else is having this problem, but I would appreciate any suggestions.

Thanks in advance!