what is easiest way to Seperate Objects to Their Own Layers

I'm not sure this would be any more performant, here's how I would do it:

// Converts an Illustrator collection to a normal Array
function get(type, parent) {
    parent = parent ? parent : app.activeDocument    
    var result = [];
    if (!parent[type]) return [];
    for (var i = 0; i < parent[type].length; i++)
        result.push(parent[type][i]);
    return result || [];
}
// Syntactical sugar to act on each item within a normal Array
Array.prototype.forEach = function (callback) {
    for (var i = 0; i < this.length; i++) callback(this[i], i, this);
};

// Do something to each pageItem
get('pageItems').forEach(function (pageItem) {
    // Add a new layer per item
    var layer = app.activeDocument.layers.add();
    // If an item is named, have the layer inherit that name
    if (pageItem.name) layer.name = pageItem.name;
    // Move the item into the layer, then proceed in loop
    pageItem.move(layer, ElementPlacement.PLACEATBEGINNING);
});

// Do something to each Layer
get('layers').forEach(function (layer) {
    // If the layer is empty and was one we'd removed items from originally, remove it
    if (!layer.pageItems.length) layer.remove();
})

But in case you're trying to learn scripting, the easiest way would be more like this:

var doc = app.activeDocument;
// Loop through all pageItems in current document
for (var i = 0; i < doc.pageItems.length; i++) {
    // Identify item and create a new layer for this item
    var item = doc.pageItems[i];
    var layer = doc.layers.add();
    // If an item is named, have the layer inherit that name
    if (item.name) layer.name = item.name;
    // Move the item into the layer, then proceed in loop
    item.move(layer, ElementPlacement.PLACEATBEGINNING);
}

The first might seem far more complicated than it needs to be, but if you had more than one instance where you needed to loop through certain items (pageItems, compoudItems, rasterItems, etc) you'd begin to see how it would slim down the end result far more for complex requirements.