Screen Blink When Trying to View Next or Previous Month Events

I imported a feed from another timely calendar which works fine when going to the next or last month, but mine tries to update repeatedly and only blinks. I can see the little spinner going but that’s it. Just stuttering. Any idea what type of other plugin might be in the way interfering with it maybe?

https://www.ads-software.com/plugins/all-in-one-event-calendar/