Control add-in resiliency in Business Central
From update 20.0 of Business Central, control add-ins that perform slowly are automatically detected and a dialog similar to the following is displayed.
An unhealthy control add-in might affect your Business Central experience and cause the page you're working on to start slowly. It has no impact on data and your changes are always saved. If you see the warning as shown above, you can hide it, but it might come back and if the problem persists, you should contact your administrator.