I havent. Atleast not hwne it wasnt user error.
The install I type to you on is over 5 years old and not sluggish.
The query is also much too broad. Do you have processes hanging? Ones taking a lot of resources? Are there system errors in the logs? Etc.
Maybe you want to start a thread on that topic with some of the pertinent information?
Ill leave this here as a possible start: [HowTo] Provide System Information