jQuery Sortable very slow

i have sortable problem in jquey. In case of 1000 records, the page takes about 5 seconds to load.
Can it be optimized?

Ultimately, the database will have 4,000 records

<tbody class="row_position">
            <?php
                    while($user = $users->fetch_assoc()){
                ?>
                    <tr id="<?php echo $user['id'] ?>">
                        <td><?php echo $user['id'] ?></td>
                        <td><?php echo $user['gid'] ?></td>
                        <td><?php echo $user['name'] ?></td>
                    </tr>
                <?php 
                    } 
                ?>
                </tbody>

<script type="text/javascript">
    $(".row_position").sortable({
        delay: 150,
        stop: function() {
            var selectedData = new Array();
            $('.row_position>tr').each(function() {
                selectedData.push($(this).attr("id"));
                
            });
            
            updateOrder(selectedData);
          
        }
    });
    function updateOrder(data) {
        $.ajax({
            url:"ajaxPro.php",
            type:'post',
            data:{position:data},
            success:function(data){
                toastr.success('Your Change Successfully Saved.');
            }
        })
    }
</script>