SPSubburaj Pandian Veluchamy Syncfusion Team February 4, 2019 12:45 PM UTC
Thank you for contacting Syncfusion support.
We have analyzed the reported behavior “Schedule becomes slow while loading more resources” based on the sample we have shared. In the sample we have loaded custom views and list view for each month cell, the list view will be added in each cell even if there were no appointments, this may affect the performance of schedule.
Hence, we recommend you use custom views with list view only for the month cell, which contains appointments, and avoid list view for the month cell which doesn’t contains appointment. We have prepared a simple sample for the same.