If you are seeing poor performance from your computer when connected to an Adobe Connect meeting, there maybe some corrupted information stored in your browser cache. The ITS Knowledge base has detailed information on how to clear your browser cache. You can find this at the following link: http://kb.its.psu.edu/psu-all/hd/deleteing-the-cache-all-browsers/
Please note that if have multiple browsers installed you will need to clear the cache for all of them.