I tried to upgrade from v11.2 to v12.1 and realize that when I select a tab on a ribbon that contains several tools it takes more time to show the content of the tab.
Hi,
There is some performance degradation in our XamRibbon control in 12.1, caused by the new Customizations feature that we added.
We're aware of the issue and our Developers are currently looking into it. I'll ask our Developer Support staff to open a private case for you so you're notified when the issue is resolved.
Thanks for your feedback!
Regards,