Performance with complex view -> on order load run node_save

Hi
I run very complex view where many times I load order data and it was very slow. I found that system is doing many times node_save. After debug I found that node_checkout is firing node_save when do load order with come from option Display a node teaser as an attribute/option combination for nodes on orders.
That's fine but it is doing even the data is already in node object and it not change.

I attach small path against last dev version for review with simply will check if data is different from this what node object has and will fire node_save only in that case.

Regards