Hi Ray,

This is known to occur when exporting large data sets. This can be improved by exporting only the current page of the grid, and excluding exporting the styles. Also, if the grid is filtered, you can opt to export only the filtered records, not all records. You can also define columns that will be skipped while exporting.

Try the example below and if it does not help, please provide more details - the version of Ignite UI for Javascript used, the grid configuration and the number of data records exported.

var exp = new $.ig.GridExcelExporter();
exp.exportGrid($(".selector"), {
    columnsToSkip: ["column1", "column2", "column3"]
    gridStyling: none
    gridFeatureOptions: {
        paging: "currentPage",
        filtering: "filteredRowsOnly"
    }
});