I feel I am missing some information or possibly not understanding fully what is occurring. The use of .png embedded images are causing significantly worst performance than a .jpg? Can you ellaborate a little more or provide some information behind this performance degradation.
Does the web page load slower due to the .png? I have not heard of this before and did not find anything immediately about it when researching, but my website design knowledge is a little shallow, so I might be missing something here.