Hi. I receive such a warning but it applies only to one "Tagi" column. I've looked through the forum but I can't apply the advice to my situation.
Warning regarding delegation. The "StartsWith" part of this formula may not work correctly for large data sets
With({
asmt: SortByColumns(
Filter(
'Wykaz klas JRWA';
IsBlank(searchQuery) || StartsWith(Title; searchQuery) || StartsWith (Tagi; searchQuery) || StartsWith(Sposob_prowadzenia;searchQuery)
);