Full content search slow

[Se7enair]

Hello together,

if I use the search with header and content, the typing into the search field gets slow und laggy.
If I turn off content search everything is fluent.

I start to typing a search into the box. the keyboard is getting slow and types every letter slower. It recognizes everything and is typing everything. but something is wrong. The problem is getting bigger when I want to correct something. I then have to wait till every keystroke is done.

What is this? Bug? User problem?

Using paperparrot 2.4.3 payed and paperless 2.13.5 on iPad with iOs 18.3
I have slightly more then 2000 documents on the server.