Help needed for webprog24


I run the website and I am beginning to bang the head against the wall because the page speed is low. I did really a lot:

[]APC Cache
[]Compression of JS and CSS

The problem is the website is dramatically slow. It just does not work the way I want. I have a few small things I can do but in general, I really did a lot to increase the page speed of this website. Can anybody give me tips on how to improve the page speed there?