Data loads quickly in IE8, but browser chokes on scrolling

Hello,
I load my data with sAjaxScource, i have bDeferRender on true and i have the 1.9.1 version running. The data loads rapidly on all browsers (IE8 around 2 secs) but when all data is loaded, IE8 chokes when you start scrolling or clicking somewhere on the page (other browsers are fine). Other pages on the website are not experiencing this behaviour.

Any ideas? FYI, I'm using Datatables in tabs.

My code:

        var table5 = $('#open').dataTable( {
            "bProcessing": true,
            "sAjaxSource": "<?= site_url(sprintf('status/gettable/%s/open', $dealer->dealerID)) ?>",
            "bJQueryUI": true,
            "bSortClasses": false,
            "aaSorting": [[7,'desc']],
            "bAutoWidth": true,
            "bInfo": true,
            "sScrollX": "100%",
            "bDeferRender": true,
            "aoColumnDefs": [
                                { "bSortable": false, "aTargets": [ 8 ] },
                                { "sClass": "bold", "aTargets": [ 4 ] },
                                { "sClass": "charset", "aTargets": [ 5 ] },
                                { "sWidth": "20%", "aTargets": [ 2 ] }
                            ],
            "sScrollXInner": "100%",
            "iDisplayLength": 50,
            "bScrollCollapse": true,
            "sPaginationType": "full_numbers",
            "bRetrieve": true,
            "fnInitComplete": function () {
                    $("#dt5 .dataTables_length > label > select").uniform();
                    $("#dt5 .datatable tbody td").addClass("text");
                    $("#dt5 .dataTables_filter input[type=text]").addClass("text");
                    $(".datatable").css("visibility","visible");
            }
        } );

        $(window).resize(function(){
            if (table5) {
            table5.fnAdjustColumnSizing();
            }
	});