Forum OpenACS Q&A: Re: Incredible Performance Decrease - Please help!!!
A couple suggestions.
Have you tried turnign on PermissionCacheP in the Kernal parameters. Even with a low timeout it may help.
For developer support if you have two types of browsers or AOL try loging in with one browser as a regular user and another as SWA. You can see all the requests for the last 900 seconds on the ds/index page.