Hi,
I installed SJ information on my website but it is very slow. Do you know why this happens?
Thank you;

Dear Yonatan,

Please try to turn on Cache of Joomla. Guide:

Go to Global Configuration > System
Scroll down to the 'Cache Settings' area
Select 'ON - Conservative caching' (or 'ON - Progressive caching' explained below)
Set 'Cache Handler' to 'File' or whatever caching software your host provides. Ours has the option for 'Cache_Lite'.
Leave or change 'Cache Time' at 15 (minutes). This is the duration between the caches.
Click 'Save'

Thanks & regards!

It is working well now. Thank you.

Hello
When I turn on Cache of Joomla (changed to ON - Conservative caching' or 'ON - Progressive caching, i try both of them), it will be good for a while and then again becomes slow to come back to the page.
i changed 'Cache Time' at 5 (minutes) see no difference.

Thank you;

Dear Yonatan,

You can refer the optimize Joomla Performance in:
joomspot.net/how-to-speed-up-optimize-joomlas-performance.html

We will update the template, modules in next time to optimize code and work on latest Sobipro and then it will work faster.

Thanks