Dos profile, TPS, Stress-based, Slow Down

Dear All,

I have a problem with TPS and Stress-based DoS Detection in Dos Profile. When I use these modul in blocking mode, my website is slow down. So if someone would like to use the site, he has to wait nearly 10 - 20 sec, and he gets a whitescreen before he gets the site page.

Any advice for this situation?

Thanks,