Power Apps Delegation Error with Search field

Hi,

I have a Canvas App that links to a SharePoint list.   I have a search box that searches in a text field.  Both of the methods below work but I do get a delegation warning.  What am I doing wrong?

Filter(
    Requests,
    StartsWith(
        FormData,
        txtSearch.Text
    )
)

Filter(
    Requests,
    txtSearch.Text in FormData
)