删除导致浏览器挂起的多个事件时，fullcalendar很慢

I used FullCalendar , created 1500 events. Each event is related to a specific username. I created a custom button that when user press on it - the calendar suppose to show him only the events related to him. This mechanism actually works but I probably doing something wrong , because when there are few events (tested on ~10 events) this works fine , but now I have 1500 events and it hangs my browser and causing it to stuck.. any help will be appriciated.I used FullCalendar , created 1500 events. Each