There are a few possible reasons as to why your flex.bi enterprise server could be having speed issues.
- Not enough RAM has been designated for flex.bi and/or database or it has been designated incorrectly. If your server has 6 GB of RAM, then they should be allocated in the following way: 2GB For flex.bi, 3GB for the Database and 1GB for other server processes.
- The server doesn't have enough entropy, see how to set up entropy here.