HMI panel very slow

HMI panel very slow

Hi,
does anybody know what can be wrong?
I download my software to a HMI and it seems that the HMI panel is very slow. For example: when I click on a button, it takes about 2 to 3 seconds before the corresponding screen has been loaded and than we still need to wait about 5 seconds for all the images (motors, valves,...) to be loaded.
I did not found a setting that sets the refresh rate.
I use a panel from Phoenix contact and Zenon 7.10 with a connection to 4 different PLC's.
Thanks

This is a migrated post! Originally posted on 04.11.2014 by user iweinclaerhout. Please be aware that information can be outdated.