Hi Matteo,

I am sorry to hear that our control does not meet your expectations. Indeed, RadSpreadsheet with the combination of RadSpreadsheetRibbonBar is significantly reducing the loading time of the form. When both controls are connected their initial synchronization requires some time due to the large number of functionalities of the RadSpreadsheet control. This is what should be improved. Currently, the possible solution that I can suggest is to use the splash screen options that the Telerik UI for WinForms suite offers: https://docs.telerik.com/devtools/winforms/controls/splashscreens/splashscreen/overview This is suitable for proper indication of long-lasting operations.

In your post, you also share that the editing operation is slow in your application. Would it be possible to share more information here? How you are editing? You are editing multiple cells or only one? How many cells are populated in the currently edited document? Any additional information is highly appreciated. 

Regards,
Dinko | Tech Support Engineer
Progress Telerik

Hi, Ian,

We understand the importance and the impact of this item. However, it requires some major refactoring in the ribbon UI and how the UI is built and mapped to the associated RadSpreadsheet. This requires planning changes and prioritizing the items.

Make sure that you cast your vote for the item in order to increase its priority. The more votes an item gathers, the higher its priority becomes.

Regards,
Dess | Tech Support Engineer, Principal
Progress Telerik