dhtmlxcombo & grid 1.5

I have a grid control(1.5) with a type=“combo” column(dhtmlxcombo) that has a list of 300 values (aprox). When users click in this column, it takes to long to display the combo. Is it possible to optimize the displaying time? This grid has a dataprocessor defined, is it posible to send the value to the server instead of text?

Is it possible to optimize the displaying time?
    You can use combo in “autocomplete mode”, in such case it will need to load only part of data.
        dhtmlx.com/docs/products/dhtmlxG … omboexcell

dhtmlxgrid_excell_combo.zip (2.45 KB)