Hilfe bei der Behebung eines INP-Problems

Hi,

i have a inp issue on mobile in my forum from some time now. Google shows 547 ms right now.

I"m debugging it from 1 month, and it’s looks like the main issue is the search in mobile. Debugbear shows me that:

BUTTON#search-button.onclick, [.search-dropdown button#search-button] - 392ms INP

Is there a easy fix for this?

thank you