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Query 1: Regarding Delay in Schedule MonthView while loading with more than 500 appointments in UWP
Based on the shared information, we have checked the reported issue and we are not getting any delay and schedule takes default time to load.
Tested sample for your reference,
Kindly modify the shared sample to reproduce the issue and revert us with more information such as device configurations, layout and SfSchedule version. We have tested the scenario in simple sample, if you have used any customizations please share details on that custom views or settings also. It will be helpful for us to analyze further and provide you a better solution.
Query 2: Regarding disabling AgendaView
As per Schedule implementation there is no separate view for Inline in UWP platform so AgendaView will be shown for both Inline and Agenda views. So, to disable AgendaView you need to set ShowAppointmentsInline and ShowAgendaView properties to false.
<schedule:SfSchedule x:Name="schedule" ShowAppointmentsInline="False" ScheduleView="MonthView">
<schedule:MonthViewSettings AppointmentDisplayMode="Appointment"ShowAgendaView="False" >
We hope this helps. Kindly revert us if you have any concern.
Subburaj Pandian V