Hello,
The demo is not performance restricted, so you should not be having this issue, we need to find out possible reasons.
If you are accessing SkyElite from an external device, be aware that you need also a good tablet or iPad. If your external device is not good or old, it could be the cause of slow behavior.
If you are using SkyElite in the main desktop computer, do not open more than one instance (window) in the same browsers. If you want to use two windows PFD + MFD(MAP), use two different browsers, like Chrome for one and Firefox for the other. Two or more instances of the same browser type slowdown the interface.
If your case is not described above, please detail your configuration as much as possible so I can help yo find out the issue, also please send me log.txt file located in SkyElite Data subfolder by PM or email.
Hopefully we can find the reason and fix it.
Thanks.!